| 1 | Science | 7,055 | 1.2M | 19 | 10 |
| 2 | Biology | 6,366 | 1.1M | 19 | 9 |
| 3 | Medicine | 9,219 | 838.0K | 6 | 4 |
| 4 | Physics | 2,622 | 778.4K | 150 | 23 |
| 5 | Cytology | 3,497 | 771.9K | 5 | 4 |
| 6 | Cell Biology | 2,986 | 730.8K | 5 | 4 |
| 7 | Natural history | 1,603 | 700.3K | 18 | 7 |
| 8 | Neurology | 6,074 | 591.5K | 7 | 6 |
| 9 | Virology | 1,899 | 545.3K | 7 | 4 |
| 10 | Molecular Biology | 4,013 | 444.7K | 18 | 10 |
| 11 | Biochemistry | 6,006 | 418.5K | 18 | 8 |
| 12 | Research | 4,097 | 230.0K | 12 | 10 |
| 13 | Human genetics | 886 | 217.8K | 14 | 8 |
| 14 | Genetics | 1,618 | 185.1K | 19 | 13 |
| 15 | Immunology | 1,692 | 182.7K | 11 | 7 |
| 16 | Neurophysiology | 1,471 | 172.1K | 14 | 7 |
| 17 | Immunity | 789 | 168.1K | 8 | 4 |
| 18 | Neurons | 639 | 167.1K | 2 | 2 |
| 19 | Endocrinology | 2,049 | 166.2K | 9 | 9 |
| 20 | Microbiology | 1,781 | 162.3K | 44 | 28 |
| 21 | Surgery | 949 | 156.8K | 5 | 3 |
| 22 | Public Health | 2,652 | 152.8K | 13 | 11 |
| 23 | Developmental Biology | 1,170 | 140.8K | 6 | 3 |
| 24 | Chemistry | 1,600 | 130.9K | 244 | 174 |
| 25 | Cancer | 1,316 | 119.4K | 14 | 8 |
| 26 | Nervous system | 816 | 116.9K | 10 | 2 |
| 27 | Pediatrics | 1,922 | 108.0K | 9 | 7 |
| 28 | Biophysics | 2,147 | 104.6K | 21 | 17 |
| 29 | Pharmacology | 1,744 | 99.9K | 14 | 7 |
| 30 | Metabolism | 1,179 | 98.8K | 11 | 10 |
| 31 | Metabolic diseases | 992 | 97.8K | 10 | 10 |
| 32 | Physiology | 1,221 | 90.7K | 40 | 15 |
| 33 | Psychiatry | 1,406 | 89.7K | 33 | 32 |
| 34 | Embryology | 661 | 89.6K | 9 | 3 |
| 35 | Urology | 2,080 | 88.9K | 3 | 3 |
| 36 | Cell differentiation | 715 | 88.5K | 6 | 3 |
| 37 | Hematology | 1,850 | 86.6K | 17 | 18 |
| 38 | Medical genetics | 1,161 | 85.9K | 21 | 26 |
| 39 | United States | 1,608 | 80.7K | 60 | 30 |
| 40 | Oncology | 599 | 80.7K | 11 | 5 |
| 41 | Psychology | 1,012 | 80.6K | 74 | 36 |
| 42 | Pediatric Neurology | 538 | 80.4K | 3 | 2 |
| 43 | Growth | 487 | 79.2K | 11 | 3 |
| 44 | Anatomy | 650 | 74.0K | 9 | 3 |
| 45 | Cytogenetics | 502 | 71.5K | 5 | 3 |
| 46 | Biotechnology | 377 | 71.4K | 235 | 45 |
| 47 | Dermatology | 1,482 | 71.4K | 2 | 1 |
| 48 | Liver diseases | 672 | 70.2K | 3 | 5 |
| 49 | Allergy | 364 | 69.5K | 10 | 4 |
| 50 | Geriatrics | 1,619 | 68.9K | 5 | 5 |
| 51 | Immune system | 264 | 68.6K | 11 | 5 |
| 52 | Bioengineering | 297 | 65.6K | 166 | 26 |
| 53 | Obstetrics | 1,337 | 65.1K | 5 | 1 |
| 54 | Genetic regulation | 372 | 62.4K | 4 | 2 |
| 55 | Medical Oncology | 988 | 61.4K | 6 | 5 |
| 56 | Developmental Genetics | 360 | 60.0K | 3 | 2 |
| 57 | Cardiovascular system | 644 | 60.0K | 22 | 19 |
| 58 | Biochemical Engineering | 177 | 59.1K | 222 | 17 |
| 59 | Critical Care | 687 | 57.9K | 8 | 9 |
| 60 | Critical Care Medicine | 682 | 57.8K | 8 | 9 |
| 61 | Radiobiology | 848 | 56.9K | 6 | 4 |
| 62 | Gene expression regulation | 333 | 56.7K | 4 | 2 |
| 63 | proteins | 533 | 56.5K | 5 | 1 |
| 64 | viral genetics | 248 | 52.3K | 2 | 3 |
| 65 | Epidemiology | 1,132 | 51.8K | 23 | 34 |
| 66 | Neurobiology | 552 | 50.9K | 16 | 10 |
| 67 | Pharmaceutical Chemistry | 652 | 50.2K | 33 | 9 |
| 68 | Immunotherapy | 258 | 50.0K | 34 | 5 |
| 69 | drug therapy | 896 | 49.5K | 6 | 3 |
| 70 | Hypertension | 531 | 48.5K | 21 | 19 |
| 71 | Transplantation | 715 | 48.5K | 5 | 4 |
| 72 | Alzheimer's disease | 1,521 | 47.5K | 2 | 5 |
| 73 | nucleic acids | 267 | 46.8K | 37 | 15 |
| 74 | Behavior | 1,079 | 45.7K | 18 | 38 |
| 75 | Pathology | 533 | 45.4K | 17 | 7 |
| 76 | Bacteriology | 400 | 44.8K | 29 | 18 |
| 77 | protein | 298 | 44.6K | 6 | 1 |
| 78 | Psychophysiology | 569 | 44.5K | 72 | 49 |
| 79 | cell physiology | 466 | 43.7K | 8 | 6 |
| 80 | Therapeutics | 655 | 43.0K | 3 | 4 |
| 81 | Dementia | 1,424 | 42.7K | 2 | 5 |
| 82 | Computational Chemistry | 63 | 42.6K | 12 | 2 |
| 83 | arthritis | 594 | 40.5K | 6 | 5 |
| 84 | Sociology | 480 | 40.4K | 49 | 23 |
| 85 | viruses | 463 | 40.1K | 21 | 17 |
| 86 | Host-parasite interactions | 295 | 38.8K | 9 | 7 |
| 87 | Brain | 670 | 38.6K | 38 | 36 |
| 88 | Environment | 526 | 38.5K | 114 | 121 |
| 89 | Molecular structure | 336 | 38.3K | 16 | 9 |
| 90 | Mental Disorders | 635 | 36.4K | 38 | 41 |
| 91 | Environmental Health | 669 | 36.0K | 73 | 86 |
| 92 | Neurochemistry | 530 | 35.4K | 23 | 17 |
| 93 | Clinical Chemistry | 482 | 34.4K | 25 | 8 |
| 94 | diseases | 41 | 33.4K | 6 | 2 |
| 95 | Disease | 37 | 33.4K | 10 | 2 |
| 96 | Aging | 940 | 31.5K | 9 | 21 |
| 97 | Health Policy | 601 | 30.9K | 14 | 7 |
| 98 | Ophthalmology | 819 | 30.6K | 8 | 13 |
| 99 | health behavior | 814 | 30.6K | 1 | 3 |
| 100 | drug development | 345 | 30.0K | 3 | 6 |
| 101 | Nutrition | 593 | 29.5K | 50 | 49 |
| 102 | Medical innovations | 314 | 29.2K | 4 | 8 |
| 103 | Toxicology | 676 | 29.1K | 46 | 37 |
| 104 | Biomedical Engineering | 515 | 27.7K | 111 | 60 |
| 105 | medical education | 861 | 26.5K | 5 | 7 |
| 106 | Medical Anthropology | 460 | 26.1K | 5 | 9 |
| 107 | Psychopharmacology | 316 | 25.7K | 30 | 27 |
| 108 | preventive medicine | 388 | 25.5K | 9 | 9 |
| 109 | Histology | 221 | 25.4K | 37 | 7 |
| 110 | Pharmacy | 490 | 25.0K | 17 | 9 |
| 111 | Memory | 561 | 24.5K | 20 | 23 |
| 112 | genome | 188 | 24.4K | 33 | 34 |
| 113 | Attention | 574 | 24.4K | 15 | 14 |
| 114 | Medical Microbiology | 327 | 24.4K | 33 | 28 |
| 115 | Perception | 552 | 24.2K | 24 | 21 |
| 116 | Mental illness | 400 | 24.0K | 31 | 36 |
| 117 | Visual Perception | 546 | 23.9K | 16 | 12 |
| 118 | Medical Physics | 635 | 23.7K | 19 | 17 |
| 119 | Virulence | 243 | 23.3K | 12 | 9 |
| 120 | Computational Biology | 294 | 23.1K | 46 | 43 |
| 121 | Rheumatology | 354 | 22.7K | 5 | 6 |
| 122 | Orthopedics | 428 | 22.6K | 7 | 6 |
| 123 | Health Services Administration | 312 | 22.3K | 5 | 3 |
| 124 | Diabetes | 351 | 21.9K | 42 | 52 |
| 125 | Diabetes mellitus | 359 | 21.8K | 33 | 48 |
| 126 | Bioinformatics | 184 | 21.7K | 70 | 32 |
| 127 | Oncogenes | 198 | 20.9K | 19 | 14 |
| 128 | Health promotion | 406 | 20.8K | 12 | 8 |
| 129 | gene mapping | 256 | 20.7K | 29 | 25 |
| 130 | Cell metabolism | 75 | 20.6K | 17 | 11 |
| 131 | pain | 344 | 20.6K | 18 | 21 |
| 132 | fertility | 347 | 20.6K | 8 | 7 |
| 133 | Infertility | 345 | 20.6K | 6 | 4 |
| 134 | Homeostasis | 71 | 20.6K | 13 | 11 |
| 135 | Emergency Medicine | 628 | 19.6K | 3 | 2 |
| 136 | Genomics | 365 | 19.4K | 55 | 45 |
| 137 | Gerontology | 749 | 19.3K | 9 | 8 |
| 138 | Environmental Toxicology | 186 | 19.2K | 46 | 18 |
| 139 | Diet | 267 | 19.1K | 41 | 38 |
| 140 | alcoholism | 537 | 18.9K | 15 | 21 |
| 141 | Lipids | 242 | 18.6K | 7 | 7 |
| 142 | Health | 561 | 18.1K | 10 | 14 |
| 143 | Bacterial infections | 109 | 17.7K | 17 | 6 |
| 144 | mycoses | 91 | 17.6K | 13 | 5 |
| 145 | Child | 660 | 17.4K | 23 | 35 |
| 146 | Respiration | 311 | 17.2K | 24 | 20 |
| 147 | Crystallography | 35 | 16.5K | 405 | 17 |
| 148 | Stem cells | 234 | 16.4K | 19 | 10 |
| 149 | Health Education | 476 | 16.3K | 16 | 12 |
| 150 | Primary health care | 364 | 16.3K | 11 | 3 |
| 151 | Substance Abuse | 523 | 16.0K | 12 | 15 |
| 152 | Proteome | 175 | 16.0K | 15 | 10 |
| 153 | X-ray crystallography | 29 | 15.8K | 98 | 11 |
| 154 | Adolescent Medicine | 241 | 15.8K | 5 | 5 |
| 155 | Immunopathology | 278 | 15.5K | 9 | 4 |
| 156 | Reproduction | 277 | 15.5K | 66 | 32 |
| 157 | Spine | 304 | 15.2K | 2 | 3 |
| 158 | Obesity | 366 | 14.9K | 36 | 47 |
| 159 | older people | 584 | 14.8K | 12 | 4 |
| 160 | drug addiction | 388 | 14.7K | 14 | 19 |
| 161 | Genetic therapy | 247 | 14.4K | 12 | 11 |
| 162 | Women's health | 474 | 14.0K | 4 | 4 |
| 163 | Bones | 186 | 13.7K | 4 | 4 |
| 164 | Nanotechnology | 143 | 13.5K | 666 | 384 |
| 165 | gene therapy | 207 | 13.4K | 16 | 12 |
| 166 | Proteomics | 167 | 13.0K | 7 | 6 |
| 167 | Adolescent | 518 | 13.0K | 25 | 30 |
| 168 | Radiology | 435 | 13.0K | 9 | 5 |
| 169 | Clinical Psychology | 148 | 12.8K | 72 | 43 |
| 170 | Hormones | 195 | 12.6K | 17 | 9 |
| 171 | Cell death | 57 | 12.6K | 137 | 49 |
| 172 | Microscopy | 126 | 12.6K | 21 | 7 |
| 173 | Membranes | 206 | 12.5K | 60 | 49 |
| 174 | Informatics | 38 | 12.3K | 65 | 1 |
| 175 | Health insurance | 204 | 12.2K | 5 | 5 |
| 176 | Bioorganic chemistry | 227 | 12.1K | 74 | 48 |
| 177 | Diagnostic microbiology | 199 | 12.1K | 16 | 35 |
| 178 | Kidney diseases | 273 | 11.7K | 9 | 5 |
| 179 | Contraception | 440 | 11.5K | 2 | 2 |
| 180 | Cognitive Science | 38 | 11.4K | 276 | 34 |
| 181 | Smoking | 291 | 11.4K | 9 | 7 |
| 182 | blood transfusion | 378 | 11.4K | 3 | 3 |
| 183 | human behavior | 145 | 11.3K | 161 | 134 |
| 184 | Emotions | 33 | 11.3K | 104 | 3 |
| 185 | Sleep | 344 | 11.3K | 24 | 36 |
| 186 | psychotherapy | 122 | 11.2K | 88 | 37 |
| 187 | Sleep Disorders | 337 | 11.1K | 23 | 32 |
| 188 | Analytical Biochemistry | 162 | 11.1K | 18 | 21 |
| 189 | Cognition | 92 | 11.1K | 221 | 83 |
| 190 | transport vesicles | 10 | 11.1K | 56 | 69 |
| 191 | Chromosome mapping | 180 | 10.8K | 40 | 33 |
| 192 | Social Psychology | 188 | 10.7K | 132 | 133 |
| 193 | Schizophrenia | 205 | 10.6K | 31 | 29 |
| 194 | Biocompatible Materials | 185 | 10.5K | 358 | 334 |
| 195 | United Kingdom | 168 | 10.4K | 60 | 38 |
| 196 | Health Services Research | 320 | 10.4K | 25 | 33 |
| 197 | Nursing | 335 | 10.2K | 10 | 11 |
| 198 | Ecology | 169 | 10.0K | 701 | 631 |
| 199 | Genetic engineering | 158 | 10.0K | 59 | 42 |
| 200 | Radiography | 271 | 9.9K | 10 | 23 |
| 201 | Neuropsychology | 270 | 9.8K | 71 | 93 |
| 202 | Nephrology | 200 | 9.7K | 9 | 5 |
| 203 | DNA polymerases | 70 | 9.4K | 19 | 24 |
| 204 | Cerebral cortex | 137 | 9.3K | 30 | 31 |
| 205 | Organic Chemistry | 199 | 9.2K | 194 | 125 |
| 206 | Sports Medicine | 222 | 9.1K | 93 | 87 |
| 207 | Malaria | 257 | 8.9K | 7 | 8 |
| 208 | behavioral medicine | 196 | 8.9K | 30 | 52 |
| 209 | nuclear magnetic resonance | 196 | 8.8K | 24 | 19 |
| 210 | Anthropology | 184 | 8.7K | 83 | 35 |
| 211 | rehabilitation | 199 | 8.7K | 89 | 66 |
| 212 | enzymes | 224 | 8.3K | 12 | 16 |
| 213 | Meteorology | 51 | 8.3K | 424 | 175 |
| 214 | Microorganisms | 47 | 8.3K | 83 | 31 |
| 215 | Magnetic Resonance Spectroscopy | 172 | 8.2K | 30 | 16 |
| 216 | Sexual health | 177 | 8.2K | 5 | 3 |
| 217 | Chemotherapy | 253 | 8.2K | 9 | 11 |
| 218 | Molecular Microbiology | 75 | 8.2K | 63 | 41 |
| 219 | Biomechanics | 138 | 8.1K | 58 | 53 |
| 220 | Cognitive neuroscience | 89 | 8.0K | 90 | 78 |
| 221 | Diagnostic Imaging | 219 | 7.9K | 52 | 60 |
| 222 | Drug delivery systems | 84 | 7.8K | 72 | 36 |
| 223 | Physical Therapy | 136 | 7.8K | 66 | 44 |
| 224 | Eating Disorders | 323 | 7.6K | 6 | 16 |
| 225 | Community Psychiatry | 178 | 7.6K | 18 | 17 |
| 226 | Public Policy | 226 | 7.4K | 30 | 29 |
| 227 | Research Design | 226 | 7.4K | 15 | 52 |
| 228 | Child Development | 178 | 7.4K | 123 | 139 |
| 229 | miniaturization | 70 | 7.4K | 232 | 153 |
| 230 | Microbial Ecology | 65 | 7.2K | 351 | 224 |
| 231 | Antigens | 128 | 7.2K | 18 | 11 |
| 231 | Post-traumatic stress disorder | 116 | 7.2K | 22 | 18 |
| 233 | Feeding and Eating Disorders | 297 | 7.2K | 6 | 16 |
| 234 | Clinical Immunology | 236 | 7.2K | 13 | 15 |
| 235 | Steroids | 155 | 7.2K | 13 | 9 |
| 236 | Child psychology | 146 | 7.2K | 119 | 143 |
| 237 | Immunogenetics | 145 | 7.1K | 6 | 4 |
| 238 | Psychosomatic Medicine | 158 | 7.1K | 15 | 30 |
| 239 | Pharmacogenetics | 140 | 7.1K | 11 | 13 |
| 240 | free radicals | 84 | 7.0K | 78 | 54 |
| 241 | Animal Behavior | 76 | 7.0K | 290 | 183 |
| 242 | counseling | 180 | 7.0K | 49 | 32 |
| 243 | Computer Graphics | 38 | 7.0K | 369 | 74 |
| 244 | Neuroimmunology | 96 | 7.0K | 17 | 16 |
| 245 | Analytical Chemistry | 113 | 6.9K | 671 | 376 |
| 246 | Leukemia | 134 | 6.9K | 44 | 89 |
| 247 | cloning | 61 | 6.8K | 25 | 11 |
| 248 | Medical Laboratory Science | 137 | 6.7K | 101 | 114 |
| 249 | Chronic diseases | 81 | 6.7K | 47 | 57 |
| 250 | Thorax | 234 | 6.7K | 7 | 9 |
| 251 | Muscles | 116 | 6.7K | 19 | 12 |
| 252 | Ethology | 66 | 6.6K | 251 | 148 |
| 253 | Psychoneuroimmunology | 85 | 6.5K | 16 | 18 |
| 254 | Environmental Engineering | 129 | 6.5K | 302 | 293 |
| 255 | Patient education | 144 | 6.4K | 10 | 9 |
| 256 | Dentistry | 161 | 6.4K | 26 | 7 |
| 257 | Hospitals | 214 | 6.4K | 5 | 4 |
| 258 | Environmental Microbiology | 33 | 6.2K | 245 | 59 |
| 259 | health planning | 110 | 6.2K | 90 | 23 |
| 260 | Chromosomes | 103 | 6.2K | 25 | 14 |
| 261 | Mental Health Services | 230 | 6.1K | 26 | 28 |
| 262 | Socioeconomic Factors | 74 | 5.9K | 19 | 2 |
| 263 | Thrombosis | 118 | 5.9K | 56 | 50 |
| 264 | peptides | 181 | 5.9K | 5 | 2 |
| 265 | Electrophysiology | 285 | 5.8K | 6 | 12 |
| 266 | Pediatric Dermatology | 185 | 5.8K | 3 | 1 |
| 267 | vascular diseases | 108 | 5.8K | 27 | 39 |
| 268 | carcinogens | 92 | 5.8K | 37 | 29 |
| 269 | Otolaryngology | 176 | 5.7K | 14 | 10 |
| 270 | Neuromuscular diseases | 101 | 5.7K | 20 | 9 |
| 271 | Orthopedic Surgery | 101 | 5.7K | 17 | 5 |
| 272 | Tropical Medicine | 198 | 5.6K | 31 | 24 |
| 273 | Nuclear Medicine | 91 | 5.5K | 79 | 49 |
| 274 | Reproductive health | 179 | 5.5K | 3 | 3 |
| 275 | Audiology | 109 | 5.5K | 46 | 33 |
| 276 | Physical Chemistry | 80 | 5.5K | 300 | 173 |
| 277 | Birth control | 156 | 5.4K | 5 | 6 |
| 278 | soil microbiology | 28 | 5.4K | 391 | 128 |
| 279 | Peptide | 161 | 5.4K | 2 | 1 |
| 280 | Carcinogenesis | 85 | 5.4K | 34 | 23 |
| 281 | Environmental Policy | 86 | 5.3K | 344 | 271 |
| 282 | drugs | 180 | 5.3K | 70 | 77 |
| 283 | drug abuse | 249 | 5.2K | 4 | 8 |
| 284 | Signal Transduction | 55 | 5.2K | 151 | 75 |
| 285 | biological factors | 52 | 5.2K | 235 | 47 |
| 286 | Cardiovascular diseases | 165 | 5.1K | 52 | 60 |
| 287 | Neurosurgery | 111 | 5.1K | 24 | 35 |
| 288 | Europe | 77 | 5.1K | 450 | 162 |
| 289 | mutation | 81 | 5.1K | 14 | 11 |
| 290 | Environmental monitoring | 129 | 5.0K | 269 | 329 |
| 291 | Vaccines | 123 | 5.0K | 97 | 77 |
| 292 | Oxidation-reduction | 40 | 5.0K | 76 | 34 |
| 293 | Molecular Pharmacology | 82 | 4.9K | 28 | 23 |
| 294 | Systems Biology | 115 | 4.9K | 44 | 26 |
| 295 | occupational diseases | 104 | 4.9K | 21 | 19 |
| 296 | Radiotherapy | 176 | 4.8K | 2 | 2 |
| 297 | Statistics | 168 | 4.8K | 204 | 192 |
| 298 | mutagens | 86 | 4.8K | 30 | 27 |
| 299 | General Surgery | 166 | 4.7K | 26 | 10 |
| 300 | Child welfare | 151 | 4.7K | 29 | 21 |
| 301 | Computer-Aided Design | 48 | 4.7K | 139 | 28 |
| 302 | Astrocytes | 44 | 4.7K | 26 | 15 |
| 303 | Lung Transplantation | 104 | 4.7K | 28 | 28 |
| 303 | Heart transplantation | 104 | 4.7K | 28 | 28 |
| 305 | health services | 211 | 4.7K | 17 | 33 |
| 306 | Biometrics | 145 | 4.7K | 44 | 65 |
| 307 | drug control | 94 | 4.6K | 12 | 4 |
| 308 | Neuropsychiatry | 134 | 4.6K | 18 | 22 |
| 309 | urban health | 110 | 4.6K | 4 | 4 |
| 310 | biological evolution | 79 | 4.6K | 268 | 299 |
| 311 | Parasitology | 125 | 4.6K | 123 | 97 |
| 312 | Mental Health | 188 | 4.6K | 40 | 51 |
| 313 | Social Sciences | 159 | 4.5K | 207 | 183 |
| 314 | Biomolecules | 20 | 4.5K | 63 | 8 |
| 315 | North America | 137 | 4.5K | 24 | 4 |
| 316 | Antioxidants | 25 | 4.5K | 111 | 29 |
| 317 | Maternal health services | 126 | 4.4K | 5 | 4 |
| 318 | Autism | 78 | 4.4K | 41 | 32 |
| 319 | Structure-activity relationship | 19 | 4.4K | 15 | 6 |
| 320 | Sports | 23 | 4.4K | 688 | 128 |
| 321 | child abuse | 50 | 4.3K | 106 | 40 |
| 322 | Clinical Trials | 155 | 4.3K | 10 | 15 |
| 323 | sexual behavior | 137 | 4.3K | 14 | 23 |
| 324 | homosexuality | 98 | 4.2K | 6 | 6 |
| 325 | Family | 81 | 4.2K | 80 | 43 |
| 326 | Heart Failure | 106 | 4.1K | 26 | 29 |
| 327 | Neuroendocrinology | 14 | 4.1K | 13 | 2 |
| 328 | Inflammation | 70 | 4.1K | 39 | 26 |
| 329 | Electronics | 104 | 4.1K | 473 | 322 |
| 330 | Antibodies | 68 | 4.0K | 22 | 14 |
| 331 | Pollution | 78 | 4.0K | 967 | 888 |
| 332 | Geriatric Psychiatry | 105 | 4.0K | 30 | 26 |
| 333 | Radiation | 86 | 4.0K | 166 | 65 |
| 334 | Clinical Pharmacology | 102 | 3.9K | 75 | 59 |
| 334 | Materials | 55 | 3.9K | 1561 | 1009 |
| 336 | Molecular Imaging | 56 | 3.9K | 75 | 53 |
| 337 | Materials Science | 55 | 3.9K | 1087 | 709 |
| 338 | personality | 68 | 3.9K | 211 | 200 |
| 339 | Culture techniques | 59 | 3.8K | 7 | 4 |
| 340 | Combinatorial chemistry | 54 | 3.8K | 58 | 46 |
| 341 | Endocrine glands | 39 | 3.8K | 8 | 7 |
| 342 | calcification | 71 | 3.8K | 12 | 13 |
| 343 | Developmental Disabilities | 70 | 3.7K | 108 | 98 |
| 344 | health services accessibility | 182 | 3.7K | 14 | 21 |
| 345 | Occupational Health | 74 | 3.7K | 58 | 24 |
| 346 | Clinical Biochemistry | 111 | 3.7K | 40 | 47 |
| 346 | complementary therapies | 120 | 3.7K | 40 | 27 |
| 348 | brain mapping | 70 | 3.7K | 38 | 50 |
| 349 | Psychiatric hospitals | 112 | 3.7K | 10 | 6 |
| 350 | Microelectronics | 18 | 3.7K | 665 | 236 |
| 351 | Alternative Medicine | 113 | 3.7K | 35 | 26 |
| 352 | Optics | 134 | 3.5K | 610 | 485 |
| 353 | Systems Analysis | 20 | 3.5K | 293 | 17 |
| 354 | environmental protection | 85 | 3.5K | 350 | 340 |
| 355 | Pediatric Nursing | 134 | 3.5K | 5 | 3 |
| 356 | infection | 99 | 3.5K | 92 | 132 |
| 357 | Education | 122 | 3.5K | 400 | 319 |
| 358 | Engineering | 95 | 3.5K | 501 | 290 |
| 359 | Data Mining | 50 | 3.5K | 132 | 101 |
| 359 | Hemodynamics | 67 | 3.5K | 58 | 76 |
| 361 | Lipid metabolism | 38 | 3.5K | 17 | 8 |
| 361 | Lipid | 38 | 3.5K | 17 | 8 |
| 363 | tomography | 141 | 3.4K | 3 | 4 |
| 364 | Evolution | 59 | 3.4K | 322 | 303 |
| 365 | Medical Technology | 125 | 3.4K | 25 | 50 |
| 366 | Recombinant DNA | 111 | 3.4K | 41 | 65 |
| 367 | Digestive system diseases | 144 | 3.4K | 15 | 24 |
| 368 | Photochemistry | 89 | 3.4K | 64 | 58 |
| 369 | Molecular evolution | 52 | 3.3K | 188 | 168 |
| 370 | environmental exposure | 124 | 3.3K | 45 | 84 |
| 371 | Light | 85 | 3.3K | 40 | 165 |
| 372 | Environmental Law | 79 | 3.3K | 49 | 105 |
| 373 | data collection | 49 | 3.3K | 53 | 65 |
| 374 | Community Psychology | 56 | 3.2K | 42 | 59 |
| 375 | Pharmacokinetics | 67 | 3.2K | 26 | 22 |
| 376 | natural products | 16 | 3.2K | 695 | 94 |
| 377 | Elderly | 396 | 3.2K | 13 | 23 |
| 378 | adolescence | 86 | 3.1K | 68 | 82 |
| 379 | epilepsy | 96 | 3.1K | 37 | 40 |
| 380 | Culture | 91 | 3.1K | 56 | 11 |
| 381 | Anxiety | 39 | 3.0K | 68 | 58 |
| 382 | Molecular Genetics | 78 | 3.0K | 202 | 283 |
| 383 | Long-Term Care | 54 | 3.0K | 33 | 54 |
| 383 | Long-term care facilities | 54 | 3.0K | 32 | 54 |
| 385 | Anxiety Disorders | 38 | 3.0K | 72 | 60 |
| 386 | molecular design | 60 | 2.9K | 2 | 9 |
| 387 | Drug design | 69 | 2.9K | 75 | 76 |
| 388 | Global Health | 170 | 2.9K | 15 | 26 |
| 389 | Autoimmunity | 60 | 2.9K | 52 | 64 |
| 390 | Nonverbal Communication | 11 | 2.8K | 55 | 4 |
| 390 | Body language | 11 | 2.8K | 19 | 1 |
| 392 | Metastasis | 19 | 2.8K | 14 | 8 |
| 393 | Magnetic Resonance Imaging | 67 | 2.8K | 27 | 31 |
| 394 | cardiac catheterization | 84 | 2.8K | 51 | 25 |
| 395 | Hallucinogens | 126 | 2.8K | 1 | 2 |
| 396 | Gender Studies | 40 | 2.7K | 12 | 7 |
| 397 | Quality of life | 78 | 2.6K | 64 | 119 |
| 398 | Histocompatibility Testing | 81 | 2.6K | 10 | 10 |
| 399 | Queer Studies | 37 | 2.6K | 7 | 6 |
| 400 | Genes | 89 | 2.6K | 44 | 49 |
| 401 | Autoimmune diseases | 61 | 2.6K | 29 | 37 |
| 402 | Speech Disorders | 85 | 2.6K | 115 | 110 |
| 403 | healthcare disparities | 116 | 2.6K | 5 | 7 |
| 404 | Teratology | 58 | 2.6K | 14 | 15 |
| 405 | collagen | 33 | 2.5K | 16 | 17 |
| 406 | Developing countries | 79 | 2.5K | 208 | 215 |
| 407 | Obstetric Nursing | 105 | 2.5K | 6 | 4 |
| 408 | Hematopoietic stem cell transplantation | 43 | 2.5K | 11 | 7 |
| 409 | Growth factors | 10 | 2.5K | 61 | 12 |
| 410 | visualization | 232 | 2.5K | 19 | 59 |
| 411 | Medical Ethics | 200 | 2.5K | 24 | 42 |
| 412 | RNA | 40 | 2.5K | 48 | 44 |
| 413 | Signal Processing | 16 | 2.5K | 1109 | 436 |
| 414 | behavior therapy | 77 | 2.4K | 79 | 103 |
| 415 | Autoantibodies | 55 | 2.4K | 29 | 35 |
| 416 | Speech | 69 | 2.4K | 94 | 95 |
| 417 | Communication | 77 | 2.3K | 234 | 266 |
| 418 | Minority Health | 7 | 2.3K | 10 | 11 |
| 419 | Infections | 59 | 2.3K | 115 | 156 |
| 420 | Extracellular matrix | 29 | 2.3K | 20 | 19 |
| 421 | Sexuality | 74 | 2.3K | 6 | 3 |
| 422 | sanitation | 42 | 2.3K | 301 | 380 |
| 423 | Parkinson's disease | 23 | 2.3K | 17 | 1 |
| 424 | Immunochemistry | 75 | 2.3K | 29 | 36 |
| 425 | Depression | 28 | 2.2K | 37 | 39 |
| 426 | violence | 79 | 2.2K | 61 | 96 |
| 427 | Parasitic Diseases | 66 | 2.2K | 187 | 203 |
| 428 | Food | 61 | 2.1K | 488 | 495 |
| 429 | Decision making | 48 | 2.1K | 171 | 156 |
| 430 | families | 63 | 2.1K | 70 | 49 |
| 431 | cell interaction | 36 | 2.1K | 118 | 66 |
| 432 | ethanol | 49 | 2.1K | 34 | 17 |
| 433 | Artificial Intelligence | 27 | 2.1K | 1250 | 655 |
| 434 | Medical Imaging | 40 | 2.1K | 36 | 35 |
| 435 | Developmental Psychology | 48 | 2.0K | 165 | 170 |
| 436 | Molecular cloning | 63 | 2.0K | 104 | 125 |
| 436 | Genetic recombination | 63 | 2.0K | 100 | 123 |
| 438 | Neonatology | 84 | 2.0K | 8 | 25 |
| 439 | Respiratory system | 62 | 2.0K | 19 | 31 |
| 440 | Protein engineering | 42 | 1.9K | 7 | 12 |
| 441 | glycoproteins | 27 | 1.9K | 65 | 37 |
| 441 | Glycoconjugates | 27 | 1.9K | 65 | 37 |
| 441 | glycolipids | 27 | 1.9K | 65 | 37 |
| 444 | Adolescent Psychology | 58 | 1.9K | 82 | 101 |
| 445 | Pharmaceutical Technology | 53 | 1.9K | 169 | 170 |
| 446 | Pharmacogenomics | 30 | 1.9K | 10 | 2 |
| 447 | Palliative Care | 90 | 1.9K | 37 | 62 |
| 448 | Plant cells | 20 | 1.9K | 385 | 401 |
| 449 | Osteoporosis | 36 | 1.8K | 8 | 11 |
| 450 | histological techniques | 40 | 1.8K | 63 | 75 |
| 451 | Communication in medicine | 55 | 1.8K | 61 | 48 |
| 452 | family violence | 15 | 1.8K | 122 | 16 |
| 453 | Neurovirology | 48 | 1.8K | 11 | 14 |
| 454 | Geriatric Oncology | 73 | 1.8K | 18 | 37 |
| 455 | elder abuse | 12 | 1.8K | 102 | 7 |
| 456 | Learning | 69 | 1.8K | 156 | 257 |
| 457 | Parasites | 51 | 1.8K | 171 | 147 |
| 458 | Retina | 14 | 1.8K | 30 | 49 |
| 459 | Melanoma | 26 | 1.7K | 9 | 8 |
| 460 | Carbohydrates | 21 | 1.7K | 67 | 39 |
| 461 | Psycholinguistics | 40 | 1.7K | 170 | 180 |
| 462 | Asthma | 62 | 1.7K | 21 | 28 |
| 463 | Nutrition physiology | 37 | 1.7K | 72 | 75 |
| 464 | feeding behavior | 57 | 1.7K | 55 | 91 |
| 465 | language | 39 | 1.7K | 109 | 107 |
| 466 | Oligosaccharide | 20 | 1.7K | 42 | 34 |
| 467 | nanoscience | 27 | 1.7K | 928 | 754 |
| 468 | Pregnancy | 68 | 1.7K | 40 | 50 |
| 469 | Bioethics | 115 | 1.7K | 38 | 49 |
| 469 | cosmetics | 15 | 1.7K | 13 | 4 |
| 471 | Mass Spectrometry | 40 | 1.7K | 196 | 150 |
| 472 | Neurolinguistics | 35 | 1.7K | 46 | 55 |
| 473 | Multiple sclerosis | 76 | 1.7K | 13 | 9 |
| 474 | cytokines | 26 | 1.6K | 237 | 127 |
| 475 | Oxidative stress | 29 | 1.6K | 89 | 119 |
| 476 | embryo transfer | 68 | 1.6K | 13 | 13 |
| 477 | preimplantation genetic diagnosis | 66 | 1.6K | 11 | 11 |
| 478 | Bone diseases | 32 | 1.6K | 32 | 83 |
| 479 | Dietetics | 54 | 1.6K | 63 | 57 |
| 480 | Cognitive Therapy | 47 | 1.6K | 46 | 52 |
| 481 | eye | 12 | 1.6K | 44 | 59 |
| 482 | Product life cycle | 2 | 1.6K | 358 | 26 |
| 482 | green products | 2 | 1.6K | 314 | 26 |
| 484 | liver | 82 | 1.6K | 1 | 3 |
| 485 | Bioenergetics | 25 | 1.5K | 178 | 138 |
| 485 | Histochemistry | 37 | 1.5K | 137 | 86 |
| 485 | Energy metabolism | 25 | 1.5K | 150 | 127 |
| 488 | DNA | 53 | 1.5K | 14 | 10 |
| 489 | Genetic Counseling | 52 | 1.5K | 16 | 11 |
| 490 | Computer Science | 11 | 1.5K | 1004 | 129 |
| 491 | women | 53 | 1.5K | 41 | 14 |
| 492 | Vision | 41 | 1.5K | 124 | 149 |
| 493 | cell membrane | 31 | 1.5K | 124 | 124 |
| 494 | Ethnology | 39 | 1.5K | 233 | 91 |
| 495 | Functional Genomics | 18 | 1.5K | 53 | 23 |
| 496 | Psychoanalysis | 90 | 1.5K | 17 | 15 |
| 497 | scientific societies | 50 | 1.5K | 71 | 81 |
| 498 | Dental Public Health | 76 | 1.5K | 5 | 6 |
| 499 | Menopause | 56 | 1.4K | 8 | 18 |
| 500 | Ergonomics | 93 | 1.4K | 78 | 110 |
| 501 | Psychiatric Epidemiology | 20 | 1.4K | 107 | 56 |
| 502 | DNS | 50 | 1.4K | 11 | 16 |
| 503 | human development | 35 | 1.4K | 136 | 137 |
| 504 | Biopharmaceutics | 40 | 1.4K | 125 | 147 |
| 505 | Social work | 89 | 1.4K | 134 | 153 |
| 506 | Polymers | 38 | 1.4K | 1374 | 1078 |
| 507 | Telemedicine | 43 | 1.4K | 15 | 20 |
| 507 | Public opinion | 19 | 1.4K | 79 | 34 |
| 509 | chronic disease | 60 | 1.4K | 19 | 36 |
| 510 | Randomized Controlled Trials | 70 | 1.4K | 81 | 75 |
| 511 | Nuclear Engineering | 81 | 1.4K | 195 | 164 |
| 512 | Youth | 43 | 1.4K | 80 | 114 |
| 513 | Microcirculation | 24 | 1.4K | 59 | 27 |
| 514 | Morphology | 15 | 1.4K | 298 | 82 |
| 515 | Erectile dysfunction | 35 | 1.3K | 10 | 11 |
| 516 | international cooperation | 26 | 1.3K | 101 | 88 |
| 517 | Cytokine | 18 | 1.3K | 60 | 49 |
| 518 | Spectrum analysis | 42 | 1.3K | 1207 | 1129 |
| 519 | Human-Computer Interaction | 30 | 1.3K | 269 | 188 |
| 520 | computer networks | 6 | 1.3K | 1669 | 460 |
| 521 | mental processes | 38 | 1.3K | 21 | 15 |
| 522 | Genetic disorders | 42 | 1.3K | 64 | 71 |
| 523 | Analytical Toxicology | 46 | 1.3K | 10 | 9 |
| 523 | Electrocardiography | 102 | 1.3K | 5 | 12 |
| 525 | Globalization | 21 | 1.3K | 96 | 39 |
| 526 | sex crimes | 51 | 1.3K | 50 | 63 |
| 527 | Psychiatric Nursing | 66 | 1.3K | 24 | 25 |
| 528 | Family Therapy | 45 | 1.2K | 104 | 76 |
| 529 | heredity | 56 | 1.2K | 35 | 54 |
| 530 | sports injuries | 76 | 1.2K | 8 | 16 |
| 531 | Neuroimaging | 36 | 1.2K | 23 | 13 |
| 532 | Image Processing | 25 | 1.2K | 722 | 546 |
| 533 | Andrology | 42 | 1.2K | 44 | 53 |
| 534 | prostaglandins | 26 | 1.2K | 74 | 42 |
| 535 | Surface Chemistry | 29 | 1.2K | 1326 | 1123 |
| 536 | Pediatric Hematology | 45 | 1.2K | 14 | 6 |
| 536 | Technology | 32 | 1.2K | 1076 | 808 |
| 538 | Body Image | 43 | 1.2K | 11 | 26 |
| 539 | Humanities | 39 | 1.2K | 185 | 62 |
| 540 | anesthesia | 64 | 1.2K | 15 | 6 |
| 541 | Kinetics | 29 | 1.2K | 33 | 21 |
| 541 | primary prevention | 51 | 1.2K | 19 | 23 |
| 543 | motivation | 12 | 1.1K | 114 | 50 |
| 544 | Genetic epidemiology | 53 | 1.1K | 24 | 37 |
| 545 | pain management | 34 | 1.1K | 74 | 69 |
| 546 | Emotion | 11 | 1.1K | 61 | 28 |
| 547 | rare diseases | 37 | 1.1K | 71 | 93 |
| 548 | drug evaluation | 51 | 1.1K | 86 | 131 |
| 549 | breastfeeding | 52 | 1.1K | 14 | 21 |
| 550 | Evidence-Based Medicine | 64 | 1.1K | 34 | 44 |
| 551 | mammals | 31 | 1.1K | 181 | 118 |
| 552 | DNA methylation | 22 | 1.1K | 20 | 28 |
| 553 | Flow cytometry | 27 | 1.1K | 23 | 26 |
| 554 | Hemophilia | 33 | 1.1K | 74 | 63 |
| 555 | Nanostructures | 14 | 1.1K | 816 | 515 |
| 556 | Colloids | 29 | 1.1K | 1287 | 1224 |
| 557 | Demography | 22 | 1.1K | 130 | 107 |
| 558 | Social problems | 29 | 1.1K | 101 | 122 |
| 559 | Brain damage | 26 | 1.0K | 57 | 45 |
| 560 | Holistic Health | 40 | 1.0K | 17 | 20 |
| 561 | Geriatric Nursing | 54 | 1.0K | 16 | 12 |
| 561 | Appetite | 27 | 1.0K | 112 | 129 |
| 563 | Developmental Neurobiology | 31 | 1.0K | 42 | 43 |
| 564 | child mental health | 31 | 1.0K | 59 | 41 |
| 565 | Environmental Psychology | 2 | 1.0K | 465 | 77 |
| 565 | Safety management | 55 | 1.0K | 9 | 10 |
| 567 | Hearing | 52 | 1.0K | 100 | 122 |
| 568 | Industrial Safety | 43 | 1.0K | 128 | 151 |
| 569 | Botany | 21 | 1.0K | 1450 | 1195 |
| 570 | plant molecular biology | 16 | 1.0K | 579 | 562 |
| 571 | Neuropharmacology | 24 | 975 | 95 | 79 |
| 572 | Sarcopenia | 15 | 963 | 64 | 66 |
| 573 | Political Science | 12 | 954 | 840 | 345 |
| 574 | Regulation | 7 | 951 | 3 | 4 |
| 575 | Amyotrophic Lateral Sclerosis | 24 | 941 | 29 | 31 |
| 576 | Parenteral nutrition | 50 | 938 | 112 | 287 |
| 577 | risk factors | 36 | 933 | 98 | 131 |
| 578 | Social behavior | 24 | 932 | 326 | 314 |
| 579 | Neurotoxicology | 24 | 922 | 74 | 77 |
| 579 | Travel | 68 | 922 | 51 | 100 |
| 581 | cross-cultural comparison | 39 | 919 | 24 | 36 |
| 582 | Subjectivity | 1 | 918 | 89 | 4 |
| 583 | Reproductive toxicology | 29 | 912 | 33 | 69 |
| 584 | Mutagenesis | 19 | 909 | 52 | 26 |
| 585 | Atherosclerosis | 16 | 902 | 27 | 15 |
| 585 | abnormalities | 25 | 902 | 16 | 21 |
| 587 | Radio | 16 | 900 | 577 | 458 |
| 588 | Socialization | 14 | 892 | 175 | 124 |
| 589 | Robotics | 9 | 889 | 983 | 405 |
| 590 | Social policy | 30 | 886 | 198 | 134 |
| 591 | role | 13 | 885 | 133 | 81 |
| 592 | Blood vessels | 23 | 879 | 31 | 35 |
| 593 | Radioisotopes | 53 | 874 | 101 | 95 |
| 594 | Zoology | 26 | 871 | 803 | 584 |
| 595 | polymerization | 25 | 863 | 1427 | 1170 |
| 596 | Bioinorganic chemistry | 25 | 848 | 428 | 341 |
| 597 | Cybernetics | 24 | 844 | 449 | 470 |
| 598 | Suicide | 48 | 835 | 32 | 90 |
| 599 | Virtual reality | 8 | 834 | 175 | 42 |
| 600 | harm reduction | 36 | 827 | 12 | 14 |
| 601 | disease outbreaks | 35 | 820 | 58 | 109 |
| 602 | extraterrestrial environment | 26 | 816 | 95 | 56 |
| 603 | Nonlinear Dynamics | 20 | 810 | 817 | 642 |
| 604 | Information Systems | 28 | 805 | 257 | 259 |
| 605 | Intellectual disability | 21 | 804 | 235 | 187 |
| 606 | Cytoskeleton | 26 | 803 | 30 | 44 |
| 606 | China | 20 | 803 | 971 | 606 |
| 608 | Electrophoresis | 29 | 801 | 366 | 374 |
| 609 | Epidemics | 34 | 799 | 59 | 112 |
| 610 | actuators | 6 | 795 | 1522 | 730 |
| 610 | transducers | 6 | 795 | 1522 | 730 |
| 612 | Cognitive Behavioral Therapy | 22 | 793 | 18 | 16 |
| 613 | civil rights | 24 | 791 | 37 | 16 |
| 614 | embryonic development | 24 | 789 | 47 | 66 |
| 615 | Hippocampus | 12 | 780 | 92 | 99 |
| 615 | vitamin C | 2 | 780 | 511 | 59 |
| 615 | vitamin E | 2 | 780 | 511 | 59 |
| 618 | Endocrine system | 134 | 778 | 8 | 19 |
| 619 | Electrochemistry | 10 | 768 | 2078 | 1222 |
| 620 | ethnicity | 41 | 767 | 50 | 43 |
| 621 | Immunopharmacology | 18 | 766 | 279 | 199 |
| 622 | Personality Assessment | 22 | 763 | 138 | 175 |
| 623 | Antiviral agents | 25 | 756 | 42 | 42 |
| 624 | Computer Vision | 20 | 754 | 343 | 382 |
| 625 | Marine Biology | 11 | 751 | 1246 | 808 |
| 626 | Androgens | 17 | 744 | 36 | 40 |
| 627 | industrial hygiene | 35 | 741 | 116 | 72 |
| 628 | Plants | 8 | 735 | 1165 | 726 |
| 629 | DNA repair | 25 | 732 | 35 | 59 |
| 630 | nuclear magnetic resonance spectroscopy | 27 | 727 | 142 | 135 |
| 631 | musculoskeletal system | 22 | 726 | 7 | 10 |
| 632 | Statistical physics | 21 | 721 | 1360 | 1106 |
| 633 | hospice care | 42 | 720 | 20 | 36 |
| 634 | Brachytherapy | 51 | 716 | 8 | 21 |
| 635 | Prisons | 53 | 715 | 2 | 6 |
| 636 | Australia | 32 | 712 | 324 | 324 |
| 637 | astronomical phenomena | 21 | 707 | 107 | 56 |
| 638 | Synthetic biology | 19 | 699 | 60 | 60 |
| 638 | Physical fitness | 11 | 699 | 462 | 281 |
| 640 | Cell communication | 12 | 695 | 158 | 134 |
| 641 | Neurotransmitters | 57 | 693 | 38 | 96 |
| 642 | Population | 18 | 688 | 247 | 212 |
| 643 | Food additives | 12 | 687 | 440 | 349 |
| 643 | Microfluidics | 12 | 687 | 49 | 22 |
| 643 | disease vectors | 23 | 687 | 198 | 206 |
| 646 | Ethics | 33 | 682 | 148 | 138 |
| 647 | Cost control | 38 | 676 | 7 | 9 |
| 648 | hygiene | 26 | 674 | 45 | 53 |
| 649 | Nanostructured Materials | 14 | 653 | 1428 | 1225 |
| 650 | gastrointestinal tract | 10 | 648 | 105 | 86 |
| 651 | Teaching | 62 | 646 | 207 | 416 |
| 652 | Geriatric Pharmacology | 20 | 643 | 36 | 38 |
| 653 | Synchrotron Radiation | 12 | 641 | 120 | 49 |
| 654 | Chromatographic analysis | 29 | 636 | 446 | 429 |
| 655 | Pediatric Rheumatology | 27 | 635 | 21 | 20 |
| 656 | Chromatography | 28 | 634 | 364 | 377 |
| 656 | Synapses | 9 | 634 | 107 | 65 |
| 658 | environmental pollution | 26 | 629 | 1458 | 1818 |
| 659 | Language Disorders | 25 | 625 | 225 | 210 |
| 660 | Molecular Spectroscopy | 29 | 623 | 435 | 458 |
| 661 | Drug discovery | 18 | 622 | 17 | 27 |
| 662 | School Psychology | 15 | 617 | 150 | 132 |
| 663 | Neurogenetics | 26 | 616 | 20 | 32 |
| 664 | Criminal psychology | 14 | 615 | 312 | 224 |
| 665 | health workforce | 11 | 614 | 44 | 37 |
| 666 | Antibacterial agents | 18 | 610 | 135 | 173 |
| 667 | psychopathology | 28 | 609 | 55 | 123 |
| 668 | Marriage | 19 | 607 | 120 | 105 |
| 669 | Electron Microscopy | 20 | 606 | 80 | 39 |
| 670 | Fluorescence spectroscopy | 27 | 602 | 20 | 31 |
| 671 | cell movement | 18 | 601 | 38 | 63 |
| 672 | Public Health Administration | 32 | 600 | 84 | 59 |
| 673 | rural health | 29 | 596 | 22 | 28 |
| 674 | Behavioral research | 30 | 594 | 21 | 38 |
| 674 | Nanoparticles | 10 | 594 | 970 | 678 |
| 676 | Quality Assurance | 29 | 590 | 19 | 23 |
| 677 | Plant physiology | 12 | 585 | 1038 | 933 |
| 678 | Comparative Physiology | 21 | 583 | 226 | 257 |
| 679 | Industrial Microbiology | 17 | 576 | 685 | 779 |
| 680 | Photography | 95 | 573 | 186 | 127 |
| 681 | Mitochondria | 7 | 563 | 97 | 43 |
| 682 | locomotion | 11 | 559 | 266 | 181 |
| 682 | posture | 11 | 559 | 266 | 181 |
| 682 | gait | 11 | 559 | 266 | 181 |
| 682 | walking | 11 | 559 | 266 | 181 |
| 686 | drug resistance | 13 | 558 | 184 | 158 |
| 687 | Organ transplantation | 39 | 556 | 51 | 67 |
| 688 | allied health | 29 | 546 | 16 | 41 |
| 689 | men | 25 | 544 | 10 | 21 |
| 690 | Gastrointestinal diseases | 22 | 543 | 88 | 98 |
| 691 | Protein folding | 10 | 537 | 22 | 8 |
| 691 | System analysis | 23 | 537 | 767 | 786 |
| 693 | Asia | 26 | 534 | 706 | 592 |
| 694 | Social support | 11 | 528 | 39 | 16 |
| 694 | Social environment | 11 | 528 | 41 | 16 |
| 696 | sex differences | 8 | 527 | 23 | 23 |
| 697 | Oral Medicine | 26 | 523 | 101 | 84 |
| 697 | Lymphoma | 36 | 523 | 27 | 33 |
| 697 | Multiple Myeloma | 36 | 523 | 25 | 30 |
| 700 | Cardiac rehabilitation | 15 | 522 | 6 | 13 |
| 701 | Environmental pollutants | 14 | 521 | 931 | 873 |
| 702 | Frontotemporal lobar degeneration | 19 | 515 | 30 | 41 |
| 702 | ethnic groups | 24 | 515 | 37 | 58 |
| 704 | Liposomes | 32 | 512 | 50 | 186 |
| 705 | Pituitary gland | 15 | 510 | 44 | 42 |
| 706 | monoclonal antibodies | 16 | 506 | 40 | 30 |
| 707 | health and race | 27 | 505 | 9 | 20 |
| 708 | child behavior | 32 | 502 | 48 | 156 |
| 709 | Chemical analysis | 15 | 501 | 373 | 354 |
| 710 | Evolutionary Genetics | 24 | 498 | 54 | 119 |
| 710 | Molecular Epidemiology | 24 | 498 | 54 | 119 |
| 710 | Cardiac electrophysiology | 28 | 498 | 37 | 83 |
| 710 | arrhythmia | 28 | 498 | 37 | 83 |
| 714 | Mycology | 23 | 495 | 464 | 613 |
| 715 | Genetic Toxicology | 11 | 493 | 108 | 134 |
| 716 | Radiation Oncology | 14 | 491 | 104 | 78 |
| 717 | Artificial Organs | 36 | 489 | 91 | 142 |
| 717 | Healing | 10 | 489 | 20 | 8 |
| 719 | Biosensors | 13 | 486 | 547 | 719 |
| 720 | Relationships | 6 | 485 | 90 | 47 |
| 721 | biobanks | 15 | 483 | 13 | 8 |
| 722 | Hemostasis | 28 | 480 | 152 | 226 |
| 723 | Marriage counseling | 13 | 478 | 94 | 86 |
| 724 | Fertilization | 4 | 475 | 55 | 13 |
| 724 | gametes | 4 | 475 | 55 | 13 |
| 726 | Algae | 1 | 467 | 1007 | 293 |
| 726 | Seaweed | 1 | 467 | 785 | 220 |
| 726 | Human biology | 23 | 467 | 119 | 131 |
| 726 | Biodiversity | 13 | 467 | 931 | 845 |
| 730 | X-rays | 20 | 466 | 119 | 81 |
| 731 | professional practice | 48 | 457 | 5 | 2 |
| 732 | chromatin | 8 | 455 | 33 | 40 |
| 733 | biochemical markers | 26 | 454 | 43 | 88 |
| 734 | world | 9 | 449 | 330 | 351 |
| 735 | Cell adhesion | 14 | 446 | 13 | 28 |
| 736 | Pediatric Endocrinology | 19 | 444 | 46 | 29 |
| 737 | Consciousness | 31 | 439 | 40 | 146 |
| 738 | poverty | 14 | 433 | 71 | 71 |
| 739 | Occupational Therapy | 29 | 430 | 200 | 170 |
| 740 | biomedicine | 20 | 429 | 72 | 143 |
| 741 | Music | 24 | 426 | 165 | 182 |
| 742 | Diagnosis | 25 | 425 | 47 | 58 |
| 743 | eugenics | 11 | 423 | 201 | 142 |
| 744 | Mathematics | 27 | 422 | 2375 | 1976 |
| 744 | Online social networks | 11 | 422 | 67 | 42 |
| 746 | mental health promotion | 11 | 416 | 55 | 37 |
| 747 | Information Science | 19 | 414 | 912 | 1136 |
| 748 | Criminology | 21 | 412 | 308 | 304 |
| 748 | Aggression | 16 | 412 | 139 | 213 |
| 750 | pollutants | 11 | 411 | 852 | 879 |
| 750 | behavior modification | 7 | 411 | 236 | 212 |
| 752 | women's rights | 22 | 409 | 12 | 19 |
| 753 | Sound | 13 | 408 | 434 | 316 |
| 754 | Information Theory | 6 | 406 | 972 | 543 |
| 755 | Africa | 28 | 403 | 324 | 316 |
| 756 | Familial diseases | 11 | 399 | 51 | 37 |
| 757 | Cell survival | 12 | 398 | 28 | 51 |
| 757 | molecular chaperones | 12 | 398 | 36 | 51 |
| 759 | Molecular recognition | 3 | 396 | 187 | 34 |
| 760 | Biomarkers | 17 | 395 | 56 | 54 |
| 761 | internet | 13 | 393 | 660 | 646 |
| 762 | Phytotherapy | 16 | 391 | 99 | 176 |
| 763 | Enteral nutrition | 22 | 386 | 206 | 403 |
| 764 | Archaeology | 3 | 385 | 1162 | 432 |
| 765 | Yeast | 7 | 379 | 223 | 188 |
| 766 | Bipolar Disorder | 18 | 378 | 96 | 166 |
| 767 | Pharmacognosy | 13 | 374 | 825 | 944 |
| 768 | occupational health and safety | 9 | 366 | 62 | 31 |
| 769 | Sustainable Development | 5 | 365 | 1514 | 933 |
| 769 | Food Microbiology | 8 | 365 | 640 | 673 |
| 771 | paraphilias | 6 | 363 | 87 | 51 |
| 772 | Metallurgy | 7 | 361 | 1421 | 911 |
| 773 | vitamins | 9 | 355 | 30 | 41 |
| 774 | Freeze-Drying | 8 | 353 | 146 | 82 |
| 774 | Hypothermia | 8 | 353 | 146 | 82 |
| 774 | Freeze Drying | 8 | 353 | 146 | 82 |
| 774 | amino acids | 7 | 353 | 294 | 203 |
| 778 | Agriculture | 13 | 351 | 869 | 861 |
| 779 | voice | 22 | 348 | 95 | 141 |
| 780 | food technology | 8 | 345 | 1490 | 1277 |
| 781 | Metabolic disorders in children | 13 | 342 | 60 | 30 |
| 782 | Patient Safety | 18 | 340 | 9 | 11 |
| 782 | Developmental Immunology | 8 | 340 | 286 | 268 |
| 784 | Emergency Medical Services | 27 | 339 | 105 | 163 |
| 784 | Microfabrication | 19 | 339 | 60 | 94 |
| 786 | Human Rights | 6 | 337 | 353 | 140 |
| 787 | mental health policy | 18 | 336 | 48 | 64 |
| 788 | Social interaction | 9 | 334 | 145 | 138 |
| 789 | Cerebellum | 13 | 327 | 71 | 131 |
| 789 | Cerebellar ataxia | 13 | 327 | 71 | 130 |
| 791 | Health care reform | 23 | 326 | 7 | 9 |
| 792 | Psychoanalytic theory | 20 | 325 | 9 | 15 |
| 793 | Vocational guidance | 12 | 323 | 369 | 461 |
| 794 | Criminal Law | 12 | 320 | 91 | 87 |
| 794 | Laser therapy | 13 | 320 | 134 | 80 |
| 796 | Ceramics | 4 | 319 | 1222 | 564 |
| 797 | Altitude Sickness | 12 | 316 | 32 | 30 |
| 797 | monitoring | 20 | 316 | 31 | 37 |
| 797 | Altitude | 12 | 316 | 32 | 30 |
| 800 | Human evolution | 7 | 315 | 241 | 248 |
| 801 | Glass | 1 | 314 | 1423 | 487 |
| 801 | pottery | 1 | 314 | 1345 | 480 |
| 801 | Primates | 11 | 314 | 285 | 273 |
| 804 | disabilities | 8 | 311 | 369 | 283 |
| 805 | Ultrasonics | 8 | 310 | 696 | 657 |
| 805 | Ferroelectricity | 8 | 310 | 614 | 297 |
| 805 | Ultrasound | 8 | 310 | 399 | 302 |
| 805 | Radio frequency | 8 | 310 | 249 | 193 |
| 809 | organization | 4 | 308 | 634 | 496 |
| 810 | Scanning electron microscopy | 7 | 307 | 36 | 22 |
| 811 | Food Policy | 7 | 305 | 154 | 166 |
| 811 | Autism spectrum disorders | 3 | 305 | 46 | 16 |
| 813 | Angst | 2 | 301 | 25 | 9 |
| 814 | Biochemical Genetics | 16 | 299 | 70 | 56 |
| 815 | Biological Systems | 8 | 297 | 224 | 189 |
| 816 | Economics | 13 | 295 | 1910 | 1643 |
| 816 | Radiation effects | 12 | 295 | 192 | 324 |
| 818 | nursing education | 12 | 294 | 25 | 14 |
| 818 | Jurisprudence | 16 | 294 | 330 | 345 |
| 820 | Software Engineering | 7 | 293 | 631 | 471 |
| 820 | Student Health Services | 18 | 293 | 68 | 107 |
| 822 | Plant Genetics | 8 | 292 | 363 | 448 |
| 822 | Forensic Psychology | 13 | 292 | 124 | 122 |
| 824 | Genetic testing | 13 | 289 | 64 | 35 |
| 825 | Sociobiology | 9 | 288 | 90 | 92 |
| 826 | Geophysics | 6 | 280 | 2101 | 1646 |
| 827 | Entomology | 18 | 279 | 858 | 883 |
| 828 | Psychometrics | 6 | 277 | 302 | 247 |
| 828 | Protozoa | 15 | 277 | 103 | 189 |
| 828 | animals | 5 | 277 | 940 | 434 |
| 828 | Telecommunication | 4 | 277 | 2053 | 1251 |
| 828 | indoor air pollution | 8 | 277 | 148 | 167 |
| 828 | Ventilation | 8 | 277 | 226 | 194 |
| 828 | Sick building syndrome | 8 | 277 | 148 | 167 |
| 835 | motor skills | 2 | 272 | 268 | 95 |
| 836 | Operations Research | 5 | 271 | 1614 | 1112 |
| 836 | Cultural diversity | 10 | 271 | 62 | 87 |
| 838 | gene transfer | 6 | 270 | 132 | 93 |
| 838 | genetic transformation | 6 | 270 | 132 | 93 |
| 840 | kidney | 3 | 268 | 65 | 46 |
| 841 | Insects | 3 | 267 | 1318 | 608 |
| 842 | Optical materials | 7 | 266 | 1647 | 1556 |
| 843 | Qualitative Research | 11 | 264 | 209 | 225 |
| 843 | energy development | 3 | 264 | 821 | 498 |
| 845 | Ion channels | 8 | 263 | 25 | 23 |
| 846 | Dialysis | 11 | 261 | 39 | 25 |
| 847 | Economic History | 8 | 260 | 1867 | 1292 |
| 847 | Surface properties | 3 | 260 | 1167 | 750 |
| 849 | air quality management | 7 | 258 | 236 | 220 |
| 849 | Kidney transplantation | 3 | 258 | 60 | 22 |
| 849 | weight loss | 16 | 258 | 30 | 38 |
| 852 | masculinity | 7 | 257 | 16 | 30 |
| 853 | Population Genetics | 5 | 256 | 807 | 708 |
| 853 | Molecular ecology | 5 | 256 | 706 | 706 |
| 855 | Bioelectronics | 7 | 255 | 682 | 920 |
| 856 | crime victims | 7 | 252 | 59 | 26 |
| 857 | Precision medicine | 14 | 244 | 56 | 68 |
| 858 | Insect biochemistry | 2 | 242 | 542 | 276 |
| 859 | Energy Policy | 2 | 241 | 2637 | 1856 |
| 859 | Positive Psychology | 6 | 241 | 81 | 133 |
| 861 | Learning disabilities | 6 | 238 | 516 | 383 |
| 861 | Pharmacy management | 10 | 238 | 104 | 84 |
| 863 | venom | 9 | 237 | 328 | 360 |
| 863 | Toxins | 9 | 237 | 367 | 402 |
| 865 | Organizational Behavior | 2 | 236 | 645 | 431 |
| 866 | Medicinal plants | 7 | 235 | 833 | 934 |
| 867 | Chemical Engineering | 9 | 234 | 2470 | 2547 |
| 868 | Divorce | 8 | 231 | 52 | 31 |
| 868 | Composite Materials | 4 | 231 | 2069 | 1716 |
| 870 | Synaptic Transmission | 10 | 227 | 197 | 284 |
| 870 | Liquid chromatography | 18 | 227 | 86 | 89 |
| 872 | Invertebrates | 6 | 226 | 369 | 256 |
| 872 | Bereavement | 9 | 226 | 48 | 49 |
| 874 | Oligosaccharides | 7 | 223 | 106 | 102 |
| 875 | Economic Development | 5 | 222 | 1097 | 950 |
| 875 | Symbolic interactionism | 10 | 222 | 28 | 40 |
| 875 | deviant behavior | 4 | 222 | 241 | 99 |
| 878 | correctional psychology | 6 | 220 | 142 | 137 |
| 878 | cell proliferation | 19 | 220 | 56 | 152 |
| 878 | ecosystem | 6 | 220 | 851 | 886 |
| 878 | Immune response | 4 | 220 | 19 | 3 |
| 882 | Cell migration | 6 | 217 | 21 | 50 |
| 883 | Forensic Psychiatry | 11 | 216 | 246 | 248 |
| 884 | Quantum electronics | 6 | 214 | 1127 | 773 |
| 884 | Social Change | 7 | 214 | 611 | 862 |
| 886 | Disease management | 15 | 213 | 12 | 13 |
| 886 | Lymphatic system | 7 | 213 | 33 | 35 |
| 886 | Biofilms | 6 | 213 | 55 | 100 |
| 886 | Professional ethics | 5 | 213 | 166 | 97 |
| 886 | plant communities | 2 | 213 | 1098 | 793 |
| 891 | Labor Economics | 1 | 212 | 774 | 273 |
| 891 | labor | 1 | 212 | 597 | 151 |
| 891 | working class | 1 | 212 | 324 | 138 |
| 894 | Nuclear Physics | 16 | 207 | 1947 | 2130 |
| 894 | Genetic Research | 5 | 207 | 85 | 66 |
| 894 | Mixed methods research | 3 | 207 | 49 | 45 |
| 894 | nursing ethics | 11 | 207 | 51 | 114 |
| 894 | Textile industry | 7 | 207 | 276 | 151 |
| 899 | Cell cycle | 17 | 206 | 55 | 150 |
| 900 | environmental justice | 1 | 205 | 85 | 5 |
| 900 | Morphogenesis | 2 | 205 | 81 | 29 |
| 900 | social justice | 1 | 205 | 664 | 66 |
| 903 | Engineering Ethics | 4 | 204 | 159 | 91 |
| 903 | toxicity testing | 10 | 204 | 198 | 314 |
| 905 | Photonics | 11 | 203 | 988 | 1200 |
| 905 | Risk assessment | 9 | 203 | 222 | 210 |
| 905 | Program Evaluation | 4 | 203 | 60 | 42 |
| 905 | evaluation | 4 | 203 | 110 | 34 |
| 909 | History of Medicine | 13 | 201 | 175 | 72 |
| 910 | death | 11 | 199 | 70 | 82 |
| 911 | Technological Innovations | 3 | 197 | 1028 | 605 |
| 911 | Identity | 4 | 197 | 97 | 86 |
| 911 | sadness | 10 | 197 | 48 | 61 |
| 911 | Self | 4 | 197 | 133 | 99 |
| 911 | antisocial personality disorder | 10 | 197 | 48 | 61 |
| 916 | Linguistics | 7 | 195 | 850 | 615 |
| 917 | Counseling Psychology | 8 | 192 | 113 | 155 |
| 917 | Structural biology | 4 | 192 | 31 | 29 |
| 917 | Catholicism | 2 | 192 | 81 | 1 |
| 920 | economic policy | 10 | 190 | 1230 | 1031 |
| 921 | Pacific Islands | 12 | 188 | 73 | 74 |
| 921 | Health Risk Assessment | 7 | 188 | 176 | 163 |
| 921 | biopolymers | 3 | 188 | 1073 | 743 |
| 924 | Genetic translocation | 2 | 187 | 260 | 115 |
| 924 | plasmids | 2 | 187 | 260 | 115 |
| 926 | Stress | 12 | 185 | 50 | 148 |
| 927 | Bacteria | 3 | 182 | 312 | 327 |
| 928 | Radiopharmaceuticals | 28 | 179 | 36 | 72 |
| 929 | Forensic Genetics | 4 | 178 | 191 | 158 |
| 930 | Cell division | 5 | 176 | 230 | 269 |
| 930 | warfare | 8 | 176 | 131 | 216 |
| 932 | Herbal medicine | 4 | 175 | 592 | 562 |
| 933 | Gender identity | 4 | 174 | 243 | 82 |
| 934 | Neural circuitry | 16 | 172 | 811 | 1466 |
| 935 | Quality Control | 6 | 171 | 1134 | 1090 |
| 935 | Preoperative Care | 13 | 171 | 8 | 27 |
| 935 | Exercise | 8 | 171 | 826 | 791 |
| 938 | Behavioral Genetics | 3 | 168 | 219 | 200 |
| 939 | Clinical Laboratory Science | 13 | 167 | 44 | 75 |
| 939 | perioperative care | 12 | 167 | 8 | 28 |
| 941 | Interferons | 12 | 166 | 57 | 163 |
| 942 | big data | 2 | 165 | 831 | 340 |
| 943 | Feminism | 3 | 164 | 585 | 260 |
| 944 | Environmental Management | 2 | 163 | 2838 | 2274 |
| 944 | Obsessive-Compulsive Disorder | 4 | 163 | 88 | 49 |
| 946 | Astronomy | 3 | 162 | 2109 | 1678 |
| 946 | Educational Psychology | 9 | 162 | 766 | 908 |
| 948 | Cross-Cultural Studies | 9 | 160 | 298 | 383 |
| 948 | Vaccination | 8 | 160 | 81 | 160 |
| 950 | Law | 7 | 159 | 789 | 400 |
| 951 | Oceanography | 1 | 158 | 1895 | 1079 |
| 952 | Tissue Engineering | 5 | 157 | 231 | 231 |
| 953 | Solid State Chemistry | 2 | 154 | 2424 | 1564 |
| 953 | Organometallic chemistry | 2 | 154 | 2178 | 1230 |
| 953 | Access to Information | 1 | 154 | 458 | 161 |
| 953 | Information management | 1 | 154 | 200 | 34 |
| 953 | Information dissemination | 1 | 154 | 458 | 161 |
| 958 | Risk | 5 | 153 | 356 | 376 |
| 959 | Social welfare | 11 | 152 | 231 | 292 |
| 960 | animal diseases | 3 | 151 | 467 | 280 |
| 961 | Organogenesis | 1 | 150 | 97 | 32 |
| 962 | Feminist psychology | 2 | 148 | 123 | 48 |
| 962 | Imaging systems | 3 | 148 | 817 | 309 |
| 964 | Experimental Design | 4 | 146 | 213 | 211 |
| 964 | Exercise therapy | 9 | 146 | 147 | 181 |
| 964 | Metals | 4 | 146 | 1632 | 1334 |
| 967 | Development | 3 | 145 | 722 | 652 |
| 967 | Solar System | 2 | 145 | 785 | 526 |
| 969 | Personality Disorders | 6 | 144 | 156 | 213 |
| 969 | Economic Assistance | 2 | 144 | 777 | 603 |
| 971 | Nanomedicine | 4 | 143 | 149 | 194 |
| 971 | Drosophila | 3 | 143 | 32 | 14 |
| 973 | software | 12 | 142 | 419 | 870 |
| 974 | Evolutionary Psychology | 3 | 141 | 148 | 81 |
| 974 | Neuroplasticity | 5 | 141 | 136 | 198 |
| 974 | neuronal plasticity | 5 | 141 | 35 | 119 |
| 977 | Educational Technology | 10 | 138 | 796 | 1128 |
| 978 | Uncertainty | 3 | 136 | 171 | 135 |
| 979 | Animal Biotechnology | 1 | 135 | 331 | 109 |
| 979 | Animal breeding | 1 | 135 | 1074 | 517 |
| 979 | Wildlife conservation | 1 | 135 | 1384 | 920 |
| 979 | Gene library | 2 | 135 | 99 | 74 |
| 983 | War | 7 | 134 | 81 | 79 |
| 983 | refugees | 7 | 134 | 99 | 110 |
| 985 | exobiology | 4 | 133 | 217 | 294 |
| 985 | dissociative disorders | 8 | 133 | 29 | 72 |
| 985 | Bacterial diseases | 5 | 133 | 140 | 210 |
| 988 | Trace elements | 5 | 132 | 160 | 260 |
| 988 | prions | 6 | 132 | 27 | 45 |
| 990 | Information Technology | 8 | 131 | 1460 | 1653 |
| 990 | Hearing Aids | 6 | 131 | 128 | 107 |
| 992 | urban population | 4 | 130 | 164 | 251 |
| 992 | concrete | 2 | 130 | 1050 | 909 |
| 994 | Phylogeny | 1 | 129 | 1225 | 831 |
| 995 | mathematical concepts | 15 | 128 | 94 | 188 |
| 996 | chronic fatigue syndrome | 3 | 125 | 43 | 15 |
| 997 | management | 8 | 123 | 1973 | 2397 |
| 998 | Demographic research | 2 | 122 | 145 | 144 |
| 999 | Community Health Nursing | 8 | 121 | 8 | 15 |
| 999 | plasma | 11 | 121 | 24 | 53 |