| 1 | Medicine | 486 | 27.3K | 22 | 24 |
| 2 | Science | 256 | 22.0K | 36 | 57 |
| 3 | Biology | 220 | 15.8K | 51 | 95 |
| 4 | Molecular Biology | 176 | 11.4K | 48 | 78 |
| 5 | Physics | 66 | 11.1K | 148 | 101 |
| 6 | Research | 238 | 10.0K | 29 | 25 |
| 7 | Immunology | 105 | 9.5K | 28 | 18 |
| 8 | Microbiology | 124 | 8.4K | 46 | 42 |
| 9 | Natural history | 10 | 8.0K | 195 | 87 |
| 10 | Biochemistry | 187 | 7.6K | 66 | 95 |
| 11 | Neurology | 144 | 7.0K | 30 | 51 |
| 12 | Pediatrics | 199 | 6.9K | 8 | 13 |
| 13 | Surgery | 109 | 6.4K | 7 | 10 |
| 14 | Immunity | 52 | 5.4K | 12 | 24 |
| 15 | Medical Oncology | 185 | 5.4K | 6 | 8 |
| 16 | Radiobiology | 189 | 5.3K | 4 | 7 |
| 17 | Cancer | 97 | 4.8K | 28 | 39 |
| 18 | Hematology | 229 | 4.6K | 8 | 12 |
| 19 | Ophthalmology | 67 | 4.2K | 9 | 4 |
| 20 | Genetics | 53 | 4.1K | 58 | 67 |
| 21 | Oncology | 32 | 3.9K | 31 | 23 |
| 22 | Critical Care | 47 | 3.9K | 7 | 5 |
| 23 | Critical Care Medicine | 43 | 3.9K | 8 | 5 |
| 24 | Host-parasite interactions | 37 | 3.8K | 9 | 8 |
| 25 | Transplantation | 139 | 3.8K | 3 | 11 |
| 26 | Psychiatry | 128 | 3.8K | 36 | 80 |
| 27 | Cell Biology | 60 | 3.7K | 79 | 192 |
| 28 | Public Health | 93 | 3.6K | 65 | 70 |
| 29 | Alzheimer's disease | 506 | 3.5K | 1 | 43 |
| 30 | Chemistry | 79 | 3.5K | 616 | 605 |
| 31 | Medical genetics | 84 | 3.5K | 33 | 55 |
| 32 | Endocrinology | 55 | 3.3K | 29 | 35 |
| 33 | Allergy | 83 | 3.1K | 4 | 20 |
| 34 | Cytology | 73 | 3.1K | 52 | 219 |
| 35 | Radiology | 138 | 3.0K | 2 | 2 |
| 36 | Virology | 63 | 3.0K | 39 | 194 |
| 37 | United States | 130 | 2.8K | 35 | 44 |
| 38 | Urology | 126 | 2.8K | 5 | 10 |
| 39 | Diabetes mellitus | 29 | 2.7K | 36 | 17 |
| 40 | Diabetes | 30 | 2.6K | 46 | 20 |
| 41 | Metabolism | 40 | 2.6K | 34 | 32 |
| 42 | Dementia | 491 | 2.5K | 1 | 68 |
| 43 | Clinical Immunology | 73 | 2.5K | 2 | 2 |
| 44 | Bacterial infections | 16 | 2.5K | 19 | 6 |
| 45 | mycoses | 14 | 2.5K | 20 | 7 |
| 46 | Cardiovascular system | 48 | 2.5K | 8 | 14 |
| 47 | Biophysics | 121 | 2.4K | 23 | 60 |
| 48 | Biotechnology | 21 | 2.4K | 255 | 111 |
| 49 | Epidemiology | 71 | 2.4K | 60 | 65 |
| 50 | Nutrition | 74 | 2.3K | 38 | 47 |
| 51 | Bioengineering | 13 | 2.1K | 202 | 77 |
| 52 | Health promotion | 39 | 2.1K | 31 | 21 |
| 53 | Developmental Biology | 49 | 2.1K | 37 | 97 |
| 54 | Biochemical Engineering | 6 | 2.0K | 201 | 60 |
| 55 | Metabolic diseases | 39 | 2.0K | 25 | 35 |
| 56 | Sports Medicine | 58 | 1.9K | 10 | 16 |
| 56 | viruses | 36 | 1.9K | 16 | 21 |
| 58 | Smoking | 29 | 1.9K | 16 | 5 |
| 59 | Radiography | 92 | 1.9K | 2 | 2 |
| 60 | Diagnostic Imaging | 20 | 1.8K | 16 | 5 |
| 61 | Cell differentiation | 39 | 1.8K | 35 | 96 |
| 62 | Behavior | 62 | 1.8K | 25 | 45 |
| 63 | Oncogenes | 17 | 1.8K | 18 | 15 |
| 64 | Dermatology | 91 | 1.8K | 16 | 13 |
| 64 | Environment | 14 | 1.8K | 444 | 328 |
| 66 | Neurophysiology | 39 | 1.7K | 43 | 74 |
| 67 | Human genetics | 19 | 1.7K | 66 | 184 |
| 67 | Environmental Health | 14 | 1.7K | 203 | 92 |
| 69 | Virulence | 30 | 1.7K | 9 | 16 |
| 70 | preventive medicine | 26 | 1.6K | 32 | 25 |
| 71 | Hospitals | 50 | 1.6K | 8 | 12 |
| 72 | Environmental Toxicology | 6 | 1.5K | 173 | 34 |
| 73 | alcoholism | 36 | 1.5K | 45 | 41 |
| 74 | Primary health care | 57 | 1.5K | 21 | 22 |
| 75 | Mental Disorders | 29 | 1.5K | 97 | 119 |
| 76 | drug addiction | 32 | 1.5K | 46 | 38 |
| 77 | Neurobiology | 25 | 1.5K | 20 | 30 |
| 78 | medical education | 75 | 1.4K | 14 | 25 |
| 79 | Sleep Disorders | 66 | 1.4K | 13 | 32 |
| 80 | Medical Physics | 65 | 1.4K | 12 | 24 |
| 81 | Sleep | 69 | 1.4K | 12 | 33 |
| 82 | Pharmacology | 38 | 1.4K | 190 | 217 |
| 82 | Embryology | 26 | 1.4K | 60 | 112 |
| 84 | Magnetic Resonance Imaging | 8 | 1.4K | 7 | 3 |
| 85 | Nuclear Medicine | 16 | 1.4K | 8 | 5 |
| 86 | Infection control | 43 | 1.4K | 3 | 3 |
| 87 | Medical Imaging | 6 | 1.4K | 3 | 3 |
| 88 | Toxicology | 19 | 1.3K | 180 | 91 |
| 89 | Child | 86 | 1.3K | 15 | 32 |
| 90 | Anatomy | 29 | 1.3K | 71 | 118 |
| 91 | Immunotherapy | 15 | 1.3K | 30 | 29 |
| 92 | Aging | 46 | 1.3K | 35 | 37 |
| 93 | Pathology | 43 | 1.3K | 18 | 61 |
| 94 | Growth | 12 | 1.3K | 126 | 109 |
| 95 | Stem cells | 46 | 1.3K | 7 | 13 |
| 96 | Hypertension | 32 | 1.2K | 27 | 40 |
| 97 | Orthopedics | 31 | 1.2K | 9 | 10 |
| 98 | Biocompatible Materials | 18 | 1.2K | 142 | 108 |
| 99 | Diet | 22 | 1.1K | 59 | 51 |
| 100 | Music | 68 | 1.1K | 1 | 2 |
| 100 | voice | 68 | 1.1K | 1 | 3 |
| 102 | drug development | 10 | 1.1K | 20 | 17 |
| 103 | Immune system | 7 | 1.1K | 61 | 46 |
| 104 | Cytogenetics | 18 | 1.1K | 36 | 63 |
| 105 | Therapeutics | 21 | 1.1K | 100 | 143 |
| 106 | epilepsy | 50 | 1.1K | 3 | 5 |
| 107 | Molecular Imaging | 6 | 1.0K | 13 | 5 |
| 108 | Obstetrics | 91 | 958 | 12 | 34 |
| 109 | Mental illness | 13 | 932 | 122 | 143 |
| 110 | Neurochemistry | 21 | 896 | 55 | 72 |
| 111 | Genetic regulation | 16 | 895 | 17 | 45 |
| 112 | Geriatrics | 72 | 888 | 36 | 155 |
| 113 | Physiology | 39 | 887 | 89 | 211 |
| 114 | Neuropsychology | 26 | 881 | 27 | 31 |
| 115 | Clinical Chemistry | 15 | 875 | 54 | 40 |
| 116 | Alternative Medicine | 16 | 860 | 18 | 10 |
| 116 | complementary therapies | 16 | 860 | 23 | 11 |
| 118 | Medical Microbiology | 18 | 837 | 44 | 56 |
| 119 | Signal Transduction | 8 | 836 | 41 | 19 |
| 120 | Adolescent | 73 | 834 | 15 | 68 |
| 121 | Health | 43 | 831 | 28 | 80 |
| 122 | Genetic therapy | 17 | 813 | 14 | 20 |
| 123 | Pharmaceutical Chemistry | 14 | 812 | 301 | 115 |
| 124 | nucleic acids | 22 | 810 | 28 | 92 |
| 125 | Inflammation | 9 | 807 | 16 | 8 |
| 126 | arthritis | 33 | 804 | 11 | 21 |
| 127 | Child Development | 5 | 796 | 326 | 43 |
| 128 | Respiration | 22 | 795 | 10 | 19 |
| 129 | Child psychology | 6 | 783 | 406 | 114 |
| 130 | Europe | 4 | 775 | 320 | 35 |
| 131 | Liver diseases | 32 | 755 | 11 | 64 |
| 132 | Medical innovations | 5 | 747 | 43 | 32 |
| 133 | Physical Therapy | 16 | 746 | 20 | 19 |
| 134 | pain | 40 | 739 | 12 | 40 |
| 135 | Pharmacogenetics | 18 | 734 | 10 | 14 |
| 136 | General Surgery | 40 | 724 | 1 | 2 |
| 137 | Psychopharmacology | 30 | 721 | 25 | 74 |
| 138 | Adolescent Medicine | 16 | 714 | 14 | 29 |
| 139 | Psychology | 26 | 704 | 228 | 341 |
| 140 | Oxidation-reduction | 6 | 690 | 18 | 15 |
| 141 | Antioxidants | 5 | 680 | 16 | 10 |
| 142 | Molecular Microbiology | 13 | 671 | 36 | 48 |
| 143 | rare diseases | 8 | 663 | 4 | 3 |
| 144 | Kidney diseases | 29 | 647 | 10 | 12 |
| 145 | rehabilitation | 25 | 624 | 31 | 51 |
| 146 | Nephrology | 27 | 621 | 8 | 9 |
| 147 | infection | 7 | 617 | 49 | 26 |
| 148 | behavioral medicine | 16 | 612 | 25 | 45 |
| 149 | Infections | 6 | 610 | 26 | 22 |
| 150 | Parenteral nutrition | 28 | 603 | 7 | 56 |
| 151 | X-rays | 18 | 576 | 3 | 3 |
| 152 | Molecular Spectroscopy | 5 | 559 | 42 | 6 |
| 153 | Thorax | 20 | 552 | 6 | 6 |
| 154 | Women's health | 20 | 548 | 31 | 32 |
| 155 | Health Policy | 19 | 539 | 96 | 157 |
| 156 | cloning | 13 | 537 | 6 | 28 |
| 157 | Radiotherapy | 26 | 534 | 1 | 1 |
| 158 | Social Psychology | 8 | 533 | 240 | 106 |
| 159 | Substance Abuse | 18 | 532 | 88 | 83 |
| 160 | Obesity | 19 | 520 | 145 | 318 |
| 161 | Emergency Medicine | 40 | 511 | 7 | 25 |
| 162 | psychopathology | 5 | 509 | 13 | 4 |
| 163 | breastfeeding | 17 | 498 | 32 | 19 |
| 164 | Molecular structure | 7 | 486 | 230 | 130 |
| 165 | Cardiovascular diseases | 13 | 484 | 30 | 25 |
| 166 | Genetic engineering | 12 | 482 | 45 | 85 |
| 167 | Sustainable Development | 1 | 472 | 670 | 70 |
| 167 | Environmental Policy | 1 | 472 | 702 | 131 |
| 167 | Economic Development | 1 | 472 | 438 | 59 |
| 167 | sustainability | 1 | 472 | 100 | 24 |
| 171 | North America | 25 | 471 | 3 | 5 |
| 172 | human behavior | 12 | 469 | 69 | 145 |
| 173 | Psychophysiology | 35 | 464 | 48 | 267 |
| 174 | Health Education | 24 | 454 | 56 | 73 |
| 174 | health behavior | 20 | 454 | 33 | 59 |
| 176 | Fluorescence spectroscopy | 2 | 447 | 14 | 2 |
| 177 | Gene expression regulation | 7 | 446 | 45 | 55 |
| 178 | health services | 10 | 444 | 60 | 37 |
| 179 | cardiac catheterization | 23 | 443 | 5 | 4 |
| 180 | Bones | 3 | 440 | 66 | 37 |
| 181 | proteins | 7 | 429 | 265 | 128 |
| 182 | Bacteriology | 8 | 427 | 232 | 351 |
| 183 | Genomics | 19 | 422 | 77 | 163 |
| 184 | counseling | 15 | 416 | 65 | 61 |
| 185 | Developmental Genetics | 4 | 413 | 70 | 67 |
| 186 | Developmental Disabilities | 5 | 409 | 41 | 29 |
| 187 | Health Services Research | 19 | 404 | 53 | 90 |
| 188 | Leukemia | 17 | 403 | 17 | 48 |
| 188 | Health insurance | 16 | 403 | 21 | 32 |
| 190 | drug resistance | 5 | 396 | 20 | 18 |
| 191 | Nervous system | 13 | 393 | 70 | 280 |
| 192 | histological techniques | 6 | 387 | 10 | 11 |
| 193 | Lung Transplantation | 27 | 378 | 2 | 4 |
| 193 | Heart transplantation | 27 | 378 | 2 | 4 |
| 195 | cell physiology | 10 | 370 | 117 | 218 |
| 196 | Geriatric Oncology | 7 | 367 | 18 | 15 |
| 197 | Holistic Health | 5 | 358 | 17 | 5 |
| 198 | drug therapy | 21 | 356 | 168 | 518 |
| 199 | Cost control | 4 | 353 | 8 | 3 |
| 200 | Healing | 3 | 350 | 7 | 2 |
| 200 | Evidence-Based Medicine | 3 | 350 | 119 | 23 |
| 202 | Histology | 8 | 349 | 106 | 148 |
| 202 | carcinogens | 7 | 349 | 82 | 64 |
| 204 | Rheumatology | 13 | 346 | 78 | 83 |
| 205 | Hormones | 9 | 344 | 24 | 35 |
| 206 | Biomedical Engineering | 9 | 343 | 224 | 257 |
| 207 | diseases | 1 | 339 | 41 | 67 |
| 207 | Disease | 1 | 339 | 43 | 68 |
| 209 | Attention | 7 | 337 | 600 | 424 |
| 210 | viral genetics | 3 | 333 | 34 | 57 |
| 211 | Long-Term Care | 12 | 332 | 13 | 22 |
| 211 | Long-term care facilities | 12 | 332 | 13 | 22 |
| 213 | Electrophysiology | 23 | 328 | 5 | 10 |
| 214 | Digestive system diseases | 17 | 325 | 7 | 11 |
| 215 | Speech Disorders | 13 | 322 | 22 | 38 |
| 216 | Immunopathology | 8 | 321 | 30 | 49 |
| 217 | Medical Technology | 12 | 320 | 25 | 47 |
| 218 | Carcinogenesis | 6 | 315 | 49 | 62 |
| 219 | Patient education | 13 | 312 | 17 | 30 |
| 220 | Visual Perception | 6 | 311 | 739 | 479 |
| 220 | Brain | 11 | 311 | 90 | 159 |
| 220 | Memory | 6 | 311 | 749 | 489 |
| 220 | Perception | 6 | 311 | 748 | 489 |
| 224 | Parasitic Diseases | 3 | 310 | 105 | 47 |
| 225 | Quality of life | 5 | 309 | 66 | 59 |
| 226 | Research Design | 17 | 306 | 16 | 106 |
| 227 | vascular diseases | 8 | 305 | 11 | 26 |
| 228 | Developmental Psychology | 5 | 303 | 170 | 135 |
| 229 | Chemotherapy | 19 | 300 | 34 | 70 |
| 230 | mutagens | 4 | 293 | 63 | 56 |
| 231 | risk factors | 6 | 292 | 22 | 17 |
| 232 | Thrombosis | 6 | 288 | 26 | 33 |
| 233 | Menopause | 5 | 284 | 17 | 10 |
| 234 | Otolaryngology | 15 | 279 | 23 | 20 |
| 235 | primary prevention | 7 | 273 | 20 | 17 |
| 236 | Bioorganic chemistry | 6 | 268 | 144 | 155 |
| 237 | RNA | 5 | 262 | 20 | 36 |
| 238 | Genetic disorders | 5 | 259 | 239 | 174 |
| 239 | Genetic Counseling | 19 | 257 | 22 | 46 |
| 240 | Information Science | 7 | 253 | 67 | 86 |
| 241 | Health Services Administration | 7 | 250 | 119 | 200 |
| 242 | Language Disorders | 11 | 244 | 22 | 43 |
| 242 | Lipids | 6 | 244 | 61 | 69 |
| 244 | Radioisotopes | 13 | 239 | 9 | 10 |
| 245 | scientific societies | 3 | 237 | 392 | 201 |
| 246 | Asthma | 12 | 236 | 11 | 15 |
| 247 | Diagnostic microbiology | 4 | 235 | 60 | 86 |
| 248 | Speech | 11 | 234 | 19 | 42 |
| 249 | Hemodynamics | 6 | 226 | 24 | 37 |
| 249 | chronic disease | 6 | 226 | 23 | 21 |
| 251 | Hearing | 11 | 224 | 17 | 32 |
| 252 | Spine | 5 | 223 | 36 | 25 |
| 253 | pain management | 13 | 219 | 28 | 126 |
| 254 | Pediatric Neurology | 7 | 217 | 99 | 482 |
| 255 | Clinical Psychology | 8 | 215 | 163 | 217 |
| 256 | Anxiety Disorders | 3 | 214 | 263 | 326 |
| 256 | Anxiety | 3 | 214 | 263 | 326 |
| 258 | Enteral nutrition | 12 | 212 | 11 | 54 |
| 259 | Photochemistry | 4 | 211 | 195 | 97 |
| 259 | Light | 4 | 211 | 150 | 124 |
| 261 | sports injuries | 11 | 208 | 5 | 5 |
| 262 | Nanotechnology | 6 | 206 | 1729 | 2251 |
| 262 | Vaccines | 13 | 206 | 50 | 98 |
| 264 | Infertility | 7 | 205 | 24 | 51 |
| 264 | fertility | 7 | 205 | 24 | 51 |
| 266 | Gerontology | 20 | 204 | 58 | 126 |
| 267 | Safety management | 10 | 201 | 10 | 13 |
| 268 | blood transfusion | 11 | 199 | 141 | 158 |
| 268 | Brachytherapy | 13 | 199 | 2 | 3 |
| 270 | Ecology | 4 | 198 | 3065 | 3170 |
| 271 | Depression | 2 | 194 | 344 | 347 |
| 272 | Herbal medicine | 1 | 193 | 67 | 20 |
| 273 | Extracellular matrix | 4 | 191 | 7 | 14 |
| 273 | Respiratory system | 7 | 191 | 9 | 16 |
| 273 | collagen | 4 | 191 | 8 | 15 |
| 276 | Neuropsychiatry | 4 | 187 | 146 | 134 |
| 276 | Communication | 7 | 187 | 58 | 88 |
| 278 | Molecular Pharmacology | 3 | 179 | 35 | 57 |
| 279 | United Kingdom | 6 | 176 | 91 | 145 |
| 280 | Clinical Trials | 14 | 171 | 12 | 27 |
| 280 | Endocrine glands | 1 | 171 | 21 | 26 |
| 282 | older people | 22 | 168 | 39 | 79 |
| 282 | cell interaction | 4 | 168 | 52 | 62 |
| 284 | psychotherapy | 3 | 165 | 204 | 145 |
| 285 | Parasitology | 2 | 163 | 256 | 113 |
| 285 | Parasites | 2 | 163 | 175 | 69 |
| 287 | Cerebral cortex | 4 | 161 | 68 | 130 |
| 288 | Food | 2 | 157 | 1500 | 823 |
| 288 | gene mapping | 5 | 157 | 148 | 290 |
| 290 | Organic Chemistry | 5 | 156 | 256 | 251 |
| 290 | Clinical Biochemistry | 9 | 156 | 24 | 49 |
| 290 | Animal Behavior | 5 | 156 | 159 | 247 |
| 290 | Ethology | 5 | 156 | 127 | 188 |
| 294 | Neurons | 4 | 151 | 101 | 547 |
| 295 | Technology | 4 | 149 | 1038 | 1193 |
| 296 | Maternal health services | 8 | 148 | 25 | 36 |
| 296 | Child welfare | 8 | 148 | 45 | 59 |
| 298 | Developmental Immunology | 1 | 147 | 161 | 47 |
| 299 | Drug discovery | 7 | 146 | 5 | 8 |
| 300 | Radiation | 13 | 144 | 21 | 60 |
| 300 | Organ transplantation | 7 | 144 | 157 | 85 |
| 302 | Hematopoietic stem cell transplantation | 5 | 143 | 13 | 30 |
| 303 | Wound healing | 2 | 142 | 2 | 3 |
| 303 | wound care | 2 | 142 | 2 | 3 |
| 303 | Fibrosis | 2 | 142 | 2 | 3 |
| 303 | Histocompatibility Testing | 3 | 142 | 15 | 13 |
| 303 | Cell death | 4 | 142 | 83 | 147 |
| 308 | Systems Biology | 7 | 141 | 63 | 144 |
| 309 | brain mapping | 4 | 137 | 520 | 701 |
| 310 | Neuroimaging | 6 | 136 | 9 | 12 |
| 310 | free radicals | 4 | 136 | 74 | 157 |
| 310 | mental processes | 6 | 136 | 10 | 9 |
| 313 | rural health | 3 | 135 | 86 | 54 |
| 313 | Spectrum analysis | 6 | 135 | 298 | 405 |
| 315 | Microbial Ecology | 3 | 134 | 612 | 818 |
| 316 | Drosophila | 2 | 132 | 2 | 1 |
| 317 | Histochemistry | 2 | 131 | 131 | 71 |
| 318 | Mycology | 6 | 130 | 88 | 111 |
| 319 | Synaptic Transmission | 1 | 129 | 53 | 18 |
| 319 | drug abuse | 3 | 129 | 67 | 48 |
| 319 | harm reduction | 3 | 129 | 20 | 15 |
| 319 | Cognition | 4 | 129 | 293 | 259 |
| 323 | Communication in medicine | 6 | 128 | 28 | 33 |
| 324 | Measurement | 1 | 127 | 118 | 26 |
| 324 | standardization | 1 | 127 | 7 | 1 |
| 326 | gene therapy | 3 | 126 | 92 | 129 |
| 327 | Pediatric Dermatology | 15 | 123 | 88 | 146 |
| 327 | Medical Ethics | 9 | 123 | 56 | 85 |
| 329 | Edible plants | 1 | 122 | 19 | 7 |
| 330 | Proteome | 3 | 121 | 97 | 141 |
| 331 | Education | 8 | 120 | 273 | 408 |
| 332 | behavior therapy | 3 | 119 | 91 | 55 |
| 332 | Vision | 3 | 119 | 29 | 43 |
| 334 | Chromosome mapping | 2 | 118 | 247 | 262 |
| 335 | Environmental monitoring | 2 | 117 | 686 | 459 |
| 335 | Bioethics | 7 | 117 | 43 | 75 |
| 337 | Nuclear Physics | 3 | 116 | 351 | 268 |
| 337 | Computational Biology | 3 | 116 | 594 | 782 |
| 339 | Orthopedic Surgery | 8 | 115 | 8 | 35 |
| 340 | Randomized Controlled Trials | 5 | 114 | 57 | 54 |
| 340 | Respiratory Infections | 5 | 114 | 59 | 101 |
| 340 | Influenza | 5 | 114 | 59 | 99 |
| 343 | Atherosclerosis | 2 | 112 | 12 | 15 |
| 344 | Eating Disorders | 4 | 111 | 384 | 483 |
| 344 | Feeding and Eating Disorders | 4 | 111 | 383 | 481 |
| 346 | Travel | 6 | 110 | 35 | 34 |
| 347 | Combinatorial chemistry | 4 | 108 | 38 | 93 |
| 347 | miniaturization | 4 | 108 | 126 | 271 |
| 349 | Quality Assurance | 4 | 106 | 12 | 19 |
| 350 | Melanoma | 4 | 105 | 71 | 174 |
| 351 | Ergonomics | 14 | 103 | 54 | 66 |
| 351 | Schizophrenia | 2 | 103 | 184 | 220 |
| 353 | Microcirculation | 4 | 102 | 37 | 74 |
| 353 | drugs | 5 | 102 | 425 | 673 |
| 355 | Pediatric Endocrinology | 7 | 99 | 3 | 6 |
| 356 | Industrial Safety | 6 | 95 | 27 | 68 |
| 356 | Birth control | 2 | 95 | 83 | 77 |
| 358 | Nursing | 5 | 94 | 552 | 567 |
| 358 | Autism | 4 | 94 | 213 | 408 |
| 360 | Neuroimmunology | 12 | 92 | 18 | 112 |
| 361 | Reproductive health | 2 | 91 | 88 | 72 |
| 361 | nuclear magnetic resonance | 7 | 91 | 132 | 351 |
| 361 | Magnetic Resonance Spectroscopy | 7 | 91 | 157 | 379 |
| 361 | cell adhesion molecules | 2 | 91 | 69 | 77 |
| 361 | cytokines | 2 | 91 | 135 | 158 |
| 361 | Microorganisms | 3 | 91 | 90 | 157 |
| 361 | Cell communication | 2 | 91 | 91 | 110 |
| 368 | Pharmacy | 6 | 90 | 262 | 443 |
| 368 | Psychosomatic Medicine | 5 | 90 | 54 | 132 |
| 368 | visualization | 18 | 90 | 15 | 97 |
| 368 | Tropical Medicine | 7 | 90 | 245 | 396 |
| 372 | Lymphoma | 5 | 89 | 24 | 7 |
| 372 | Cardiac electrophysiology | 6 | 89 | 2 | 8 |
| 372 | Multiple Myeloma | 5 | 89 | 24 | 5 |
| 372 | Mental Health Services | 4 | 89 | 238 | 258 |
| 372 | Computational Complexity | 3 | 89 | 33 | 22 |
| 372 | arrhythmia | 6 | 89 | 2 | 8 |
| 378 | sexual behavior | 1 | 87 | 168 | 73 |
| 379 | Biopharmaceutics | 2 | 86 | 95 | 91 |
| 380 | Dietetics | 2 | 84 | 317 | 244 |
| 380 | Cognitive Science | 4 | 84 | 118 | 267 |
| 380 | Medical Anthropology | 4 | 84 | 153 | 320 |
| 383 | preimplantation genetic diagnosis | 2 | 83 | 28 | 24 |
| 383 | embryo transfer | 2 | 83 | 29 | 24 |
| 385 | Environmental Microbiology | 2 | 82 | 620 | 962 |
| 385 | soil microbiology | 2 | 82 | 130 | 202 |
| 385 | nanoscience | 1 | 82 | 598 | 530 |
| 388 | Sports Psychology | 1 | 81 | 3 | 2 |
| 389 | anesthesia | 10 | 80 | 3 | 5 |
| 390 | Oxidative stress | 2 | 79 | 89 | 144 |
| 390 | Neuromuscular diseases | 3 | 79 | 102 | 165 |
| 390 | Family | 4 | 79 | 122 | 188 |
| 390 | Muscles | 3 | 79 | 272 | 698 |
| 394 | Anthropology | 4 | 78 | 236 | 304 |
| 394 | Drug design | 3 | 78 | 262 | 393 |
| 394 | Immunogenetics | 2 | 78 | 100 | 92 |
| 394 | genome | 3 | 78 | 203 | 445 |
| 398 | protein | 3 | 76 | 400 | 440 |
| 398 | tomography | 11 | 76 | 2 | 8 |
| 400 | Telemedicine | 8 | 75 | 8 | 54 |
| 400 | traffic safety | 2 | 75 | 22 | 16 |
| 402 | Psychoneuroimmunology | 11 | 74 | 18 | 111 |
| 402 | environmental exposure | 3 | 74 | 255 | 367 |
| 404 | Health care reform | 5 | 73 | 5 | 8 |
| 405 | Systems Engineering | 2 | 72 | 233 | 111 |
| 406 | Genetic epidemiology | 3 | 71 | 201 | 271 |
| 406 | heredity | 3 | 71 | 213 | 287 |
| 408 | Steroids | 1 | 70 | 262 | 155 |
| 408 | Bacterial diseases | 2 | 70 | 17 | 18 |
| 410 | Cellular senescence | 1 | 69 | 84 | 90 |
| 410 | Cognitive neuroscience | 4 | 69 | 64 | 201 |
| 410 | Positive Psychology | 1 | 69 | 18 | 13 |
| 413 | Retina | 1 | 67 | 18 | 48 |
| 413 | Marriage | 1 | 67 | 88 | 41 |
| 413 | Family Therapy | 1 | 67 | 192 | 77 |
| 413 | eye | 1 | 67 | 22 | 51 |
| 413 | Marriage counseling | 1 | 67 | 65 | 36 |
| 418 | Medical Laboratory Science | 5 | 65 | 83 | 253 |
| 418 | Analytical Biochemistry | 6 | 65 | 44 | 186 |
| 420 | Botany | 1 | 64 | 4480 | 4218 |
| 421 | medical errors | 1 | 63 | 10 | 4 |
| 421 | safety | 1 | 63 | 16 | 5 |
| 423 | Radiation Oncology | 2 | 61 | 20 | 37 |
| 423 | School Psychology | 1 | 61 | 160 | 83 |
| 423 | Educational Psychology | 1 | 61 | 737 | 355 |
| 423 | school psychologists | 1 | 61 | 126 | 61 |
| 427 | Bone diseases | 3 | 59 | 18 | 69 |
| 427 | Informatics | 1 | 59 | 113 | 84 |
| 429 | Elderly | 14 | 58 | 44 | 86 |
| 429 | plasma | 2 | 58 | 3 | 4 |
| 431 | Algorithms | 1 | 57 | 46 | 27 |
| 431 | software | 1 | 57 | 72 | 83 |
| 433 | Neurovirology | 1 | 56 | 31 | 31 |
| 433 | Osteoporosis | 2 | 56 | 23 | 38 |
| 433 | health planning | 2 | 56 | 702 | 674 |
| 436 | Global Health | 4 | 55 | 101 | 261 |
| 436 | Artificial Organs | 4 | 55 | 128 | 211 |
| 436 | Gastrointestinal diseases | 8 | 55 | 6 | 28 |
| 439 | Primates | 9 | 54 | 74 | 365 |
| 440 | Materials Science | 3 | 53 | 1589 | 2592 |
| 440 | Materials | 3 | 53 | 3897 | 7949 |
| 440 | Heart Failure | 7 | 53 | 10 | 50 |
| 443 | Behavioral Genetics | 4 | 52 | 12 | 48 |
| 443 | Electrocardiography | 3 | 52 | 9 | 12 |
| 445 | Blood vessels | 3 | 51 | 10 | 22 |
| 445 | drug evaluation | 5 | 51 | 93 | 297 |
| 447 | Molecular recognition | 2 | 50 | 66 | 74 |
| 447 | Autoimmunity | 2 | 50 | 40 | 118 |
| 447 | biological factors | 2 | 50 | 792 | 1139 |
| 450 | environmental pollution | 1 | 49 | 1903 | 1554 |
| 450 | Pollution | 1 | 49 | 3537 | 4160 |
| 452 | Palliative Care | 3 | 47 | 75 | 132 |
| 453 | Criminology | 2 | 46 | 215 | 322 |
| 453 | Emergency Medical Services | 4 | 46 | 22 | 72 |
| 453 | Criminal Law | 2 | 46 | 42 | 42 |
| 456 | hospice care | 2 | 45 | 76 | 76 |
| 456 | cross-cultural comparison | 2 | 45 | 44 | 74 |
| 456 | family violence | 6 | 45 | 15 | 69 |
| 459 | Cybernetics | 1 | 44 | 168 | 133 |
| 459 | Reproduction | 2 | 44 | 938 | 1324 |
| 461 | Pediatric Nursing | 1 | 43 | 220 | 166 |
| 461 | Obstetric Nursing | 1 | 43 | 196 | 132 |
| 463 | Proteomics | 2 | 41 | 125 | 298 |
| 463 | Pediatric Rheumatology | 1 | 41 | 24 | 20 |
| 463 | Globalization | 1 | 41 | 107 | 115 |
| 463 | international cooperation | 1 | 41 | 156 | 228 |
| 467 | Analytical Chemistry | 3 | 40 | 740 | 1298 |
| 467 | Altitude Sickness | 3 | 40 | 5 | 9 |
| 467 | Altitude | 3 | 40 | 5 | 9 |
| 470 | Data Mining | 1 | 39 | 285 | 339 |
| 470 | data collection | 1 | 39 | 175 | 180 |
| 470 | DNA repair | 2 | 39 | 21 | 46 |
| 470 | DNA polymerases | 3 | 39 | 44 | 220 |
| 474 | Prisons | 3 | 38 | 24 | 37 |
| 475 | Counseling Psychology | 1 | 37 | 22 | 22 |
| 475 | Vocational guidance | 1 | 37 | 426 | 374 |
| 475 | Endocrine system | 11 | 37 | 8 | 29 |
| 478 | Catalysis | 2 | 36 | 1806 | 2342 |
| 479 | dietary supplements | 1 | 35 | 80 | 112 |
| 479 | Bioinformatics | 2 | 35 | 402 | 825 |
| 479 | feeding behavior | 1 | 35 | 127 | 158 |
| 479 | Colloids | 2 | 35 | 534 | 957 |
| 479 | hygiene | 1 | 35 | 95 | 91 |
| 479 | Appetite | 1 | 35 | 113 | 136 |
| 485 | caffeine | 1 | 34 | 4 | 3 |
| 485 | Decision making | 4 | 34 | 172 | 486 |
| 485 | Chronic diseases | 2 | 34 | 95 | 225 |
| 488 | Social Sciences | 2 | 33 | 825 | 1019 |
| 488 | Neurosurgery | 5 | 33 | 101 | 964 |
| 488 | ethnicity | 2 | 33 | 71 | 116 |
| 488 | health and race | 2 | 33 | 35 | 64 |
| 488 | DNA methylation | 3 | 33 | 18 | 82 |
| 488 | ethnic groups | 2 | 33 | 24 | 65 |
| 488 | ethanol | 3 | 33 | 29 | 106 |
| 488 | liver | 4 | 33 | 29 | 417 |
| 496 | human development | 2 | 32 | 344 | 738 |
| 497 | Synapses | 2 | 31 | 42 | 124 |
| 497 | enzymes | 4 | 31 | 77 | 312 |
| 499 | sex differences | 2 | 29 | 8 | 24 |
| 499 | Genes | 2 | 29 | 196 | 441 |
| 501 | Functional Genomics | 2 | 28 | 29 | 93 |
| 501 | child abuse | 5 | 28 | 45 | 258 |
| 503 | Information Technology | 1 | 27 | 524 | 544 |
| 503 | Educational Technology | 1 | 27 | 318 | 407 |
| 503 | Biometrics | 3 | 27 | 779 | 1206 |
| 503 | Metabolic disorders in children | 3 | 27 | 6 | 8 |
| 503 | Multiple sclerosis | 2 | 27 | 32 | 50 |
| 508 | Chemical Engineering | 1 | 26 | 3525 | 3935 |
| 508 | Disease management | 1 | 26 | 30 | 32 |
| 508 | China | 1 | 26 | 1011 | 940 |
| 508 | Phytotherapy | 1 | 26 | 92 | 127 |
| 512 | Metastasis | 1 | 25 | 20 | 61 |
| 512 | Solitons | 2 | 25 | 57 | 105 |
| 512 | Fractals | 2 | 25 | 67 | 113 |
| 512 | Chaos | 2 | 25 | 57 | 105 |
| 516 | Optics | 4 | 24 | 616 | 1084 |
| 516 | Physical organic chemistry | 1 | 24 | 435 | 367 |
| 516 | healthcare disparities | 3 | 24 | 54 | 122 |
| 519 | Public Policy | 4 | 23 | 143 | 613 |
| 519 | Photonics | 3 | 23 | 1293 | 3469 |
| 519 | occupational diseases | 1 | 23 | 485 | 677 |
| 522 | Community Psychology | 2 | 22 | 381 | 878 |
| 522 | Public Health Administration | 2 | 22 | 46 | 58 |
| 522 | Lipid metabolism | 1 | 22 | 53 | 95 |
| 522 | Immunochemistry | 1 | 22 | 141 | 183 |
| 522 | Pharmacy management | 4 | 22 | 65 | 121 |
| 522 | personality | 1 | 22 | 292 | 352 |
| 522 | Lipid | 1 | 22 | 50 | 95 |
| 522 | Brain damage | 2 | 22 | 18 | 92 |
| 530 | Morphogenesis | 1 | 21 | 7 | 21 |
| 530 | Organogenesis | 1 | 21 | 5 | 17 |
| 532 | Clinical Pharmacology | 1 | 20 | 2344 | 3157 |
| 532 | Youth | 3 | 20 | 38 | 132 |
| 532 | Pregnancy | 3 | 20 | 58 | 223 |
| 535 | Surface Chemistry | 1 | 19 | 1177 | 1468 |
| 535 | Psycholinguistics | 1 | 19 | 584 | 761 |
| 535 | Neurolinguistics | 1 | 19 | 29 | 63 |
| 535 | Surface-Active Agents | 1 | 19 | 122 | 250 |
| 535 | Cell migration | 1 | 19 | 5 | 24 |
| 535 | Immunohistochemistry | 2 | 19 | 10 | 32 |
| 535 | Cell adhesion | 1 | 19 | 13 | 43 |
| 535 | Teaching | 3 | 19 | 339 | 803 |
| 535 | Surface properties | 1 | 19 | 128 | 270 |
| 535 | cell movement | 1 | 19 | 25 | 65 |
| 535 | women | 2 | 19 | 60 | 162 |
| 535 | language | 1 | 19 | 324 | 462 |
| 547 | Pharmaceutical Technology | 2 | 18 | 673 | 1333 |
| 547 | Immunopharmacology | 1 | 18 | 117 | 228 |
| 547 | Neuropharmacology | 1 | 18 | 205 | 304 |
| 547 | Drug delivery systems | 2 | 18 | 110 | 365 |
| 547 | landscapes | 1 | 18 | 17 | 20 |
| 552 | Environmental Engineering | 1 | 17 | 1325 | 1823 |
| 552 | Geriatric Nursing | 2 | 17 | 154 | 348 |
| 552 | Environmental Psychology | 1 | 17 | 24 | 76 |
| 552 | Nutrition physiology | 1 | 17 | 231 | 364 |
| 552 | Radiopharmaceuticals | 1 | 17 | 254 | 222 |
| 552 | Neuroanatomy | 1 | 17 | 21 | 51 |
| 552 | Autoantibodies | 1 | 17 | 50 | 136 |
| 552 | Africa | 2 | 17 | 270 | 518 |
| 552 | Autoimmune diseases | 1 | 17 | 58 | 156 |
| 561 | Sociology | 2 | 16 | 652 | 1613 |
| 561 | Geriatric Pharmacology | 2 | 16 | 23 | 91 |
| 561 | Agricultural Chemistry | 1 | 16 | 384 | 638 |
| 561 | Polymers | 1 | 16 | 5467 | 6210 |
| 561 | Soft Condensed Matter | 1 | 16 | 124 | 229 |
| 561 | Personality Assessment | 1 | 16 | 54 | 91 |
| 561 | biopolymers | 1 | 16 | 808 | 1476 |
| 561 | drug control | 2 | 16 | 49 | 135 |
| 569 | Biomechanics | 3 | 15 | 135 | 789 |
| 569 | Vaccination | 2 | 15 | 18 | 62 |
| 569 | Developing countries | 2 | 15 | 352 | 964 |
| 569 | mathematical concepts | 1 | 15 | 292 | 512 |
| 573 | Teratology | 1 | 14 | 155 | 360 |
| 573 | Pediatric Hematology | 6 | 14 | 7 | 107 |
| 573 | Neurotoxicology | 1 | 14 | 74 | 154 |
| 573 | health services accessibility | 3 | 14 | 104 | 325 |
| 573 | Diagnosis | 2 | 14 | 185 | 943 |
| 573 | abnormalities | 1 | 14 | 126 | 323 |
| 579 | Statistics | 1 | 13 | 2215 | 2384 |
| 579 | Meteorology | 1 | 13 | 707 | 1226 |
| 579 | Photography | 3 | 13 | 148 | 136 |
| 579 | Antiviral agents | 1 | 13 | 26 | 53 |
| 579 | Learning | 1 | 13 | 443 | 632 |
| 579 | cell membrane | 2 | 13 | 45 | 162 |
| 585 | Psychiatric Nursing | 1 | 12 | 645 | 1039 |
| 585 | Contraception | 1 | 12 | 136 | 275 |
| 585 | Neurotransmitters | 1 | 12 | 120 | 100 |
| 585 | elder abuse | 3 | 12 | 17 | 88 |
| 585 | Luminescence | 1 | 12 | 600 | 766 |
| 585 | monitoring | 1 | 12 | 27 | 32 |
| 585 | bioluminescence | 1 | 12 | 507 | 623 |
| 585 | Social behavior | 2 | 12 | 225 | 827 |
| 585 | Student Health Services | 2 | 12 | 38 | 115 |
| 585 | Membranes | 1 | 12 | 247 | 541 |
| 595 | Zoology | 1 | 10 | 1990 | 3326 |
| 595 | Ecophysiology | 1 | 10 | 82 | 220 |
| 595 | Computer-Aided Design | 1 | 10 | 180 | 341 |
| 595 | adolescence | 2 | 10 | 386 | 1410 |
| 595 | disabilities | 1 | 10 | 78 | 183 |
| 595 | Cheminformatics | 1 | 10 | 219 | 598 |
| 595 | Flow cytometry | 1 | 10 | 393 | 947 |
| 602 | Economics | 2 | 9 | 1425 | 2538 |
| 602 | War | 1 | 9 | 37 | 60 |
| 602 | urban health | 1 | 9 | 84 | 197 |
| 602 | Hearing Aids | 1 | 9 | 19 | 28 |
| 602 | warfare | 1 | 9 | 100 | 274 |
| 602 | refugees | 1 | 9 | 59 | 102 |
| 602 | Human biology | 1 | 9 | 507 | 856 |
| 602 | Hepatitis | 1 | 9 | 3 | 5 |
| 602 | Allergies | 2 | 9 | 7 | 38 |
| 611 | emergency management | 1 | 8 | 123 | 245 |
| 611 | Sports | 5 | 8 | 272 | 2670 |
| 611 | toxicity testing | 1 | 8 | 504 | 1145 |
| 611 | internet | 1 | 8 | 168 | 336 |
| 611 | allied health | 2 | 8 | 24 | 115 |
| 611 | magnetic resonance | 1 | 8 | 284 | 490 |
| 617 | Bioenergetics | 1 | 7 | 127 | 258 |
| 617 | Mental Health | 4 | 7 | 264 | 1526 |
| 617 | Energy metabolism | 1 | 7 | 93 | 181 |
| 617 | Ultrasonics | 2 | 7 | 56 | 200 |
| 617 | Ultrasonic Imaging | 2 | 7 | 21 | 77 |
| 617 | Ultrasound | 2 | 7 | 26 | 106 |
| 623 | Oncology Nursing | 1 | 6 | 2 | 1 |
| 623 | Ethics | 2 | 6 | 171 | 628 |
| 623 | Geriatric Psychiatry | 1 | 6 | 1202 | 2566 |
| 623 | Genetic testing | 1 | 6 | 37 | 98 |
| 623 | Cytoskeleton | 1 | 6 | 133 | 427 |
| 623 | orphan drugs | 1 | 6 | 4 | 7 |
| 623 | Societies | 2 | 6 | 76 | 297 |
| 623 | Chemical structure | 1 | 6 | 42 | 63 |
| 623 | Jurisprudence | 2 | 6 | 233 | 736 |
| 623 | vitamins | 1 | 6 | 15 | 118 |
| 633 | Chronobiology | 1 | 5 | 43 | 105 |
| 633 | Quality Control | 1 | 5 | 834 | 1637 |
| 633 | Circadian rhythms | 1 | 5 | 35 | 91 |
| 633 | biological clocks | 1 | 5 | 43 | 105 |
| 633 | Adolescent Psychology | 1 | 5 | 820 | 1811 |
| 633 | Accreditation | 1 | 5 | 12 | 16 |
| 633 | Pacific Islands | 1 | 5 | 57 | 132 |
| 633 | circadian rhythm | 1 | 5 | 43 | 105 |
| 633 | Asia | 1 | 5 | 1635 | 3229 |
| 633 | biological rhythms | 1 | 5 | 42 | 104 |
| 643 | Nuclear Engineering | 1 | 4 | 293 | 498 |
| 643 | Forensic Pathology | 1 | 4 | 13 | 25 |
| 643 | Calorimetry | 1 | 4 | 81 | 190 |
| 643 | peptides | 1 | 4 | 924 | 2432 |
| 643 | Physicians | 1 | 4 | 89 | 130 |
| 643 | Social work | 1 | 4 | 724 | 1940 |
| 643 | Fungi | 1 | 4 | 102 | 215 |
| 643 | India | 1 | 4 | 240 | 343 |
| 643 | Exercise | 3 | 4 | 159 | 1218 |
| 643 | Thermal analysis | 1 | 4 | 81 | 190 |
| 653 | Engineering | 1 | 3 | 1508 | 3168 |
| 653 | Mathematics | 1 | 3 | 4868 | 6577 |
| 653 | Laser therapy | 1 | 3 | 715 | 1505 |
| 653 | Microscopy | 1 | 3 | 832 | 2147 |
| 653 | Military psychology | 1 | 3 | 10 | 37 |
| 658 | Early Childhood Education | 1 | 2 | 67 | 145 |
| 658 | Andrology | 1 | 2 | 801 | 2173 |
| 658 | Computer Vision | 1 | 2 | 243 | 719 |
| 658 | Animal husbandry | 1 | 2 | 28 | 77 |
| 658 | Behavioral research | 1 | 2 | 75 | 216 |
| 658 | Cell division | 1 | 2 | 238 | 826 |
| 658 | smoking cessation | 2 | 2 | 4 | 15 |
| 658 | Patient Safety | 1 | 2 | 16 | 46 |
| 658 | Retinal diseases | 4 | 2 | 1 | 10 |
| 658 | Korea | 1 | 2 | 111 | 283 |
| 658 | Screening | 1 | 2 | 37 | 92 |
| 658 | Opioids | 1 | 2 | 14 | 43 |
| 658 | Pakistan | 1 | 2 | 116 | 185 |
| 658 | Androgens | 1 | 2 | 44 | 106 |
| 658 | livestock | 1 | 2 | 41 | 114 |
| 658 | Literacy | 1 | 2 | 82 | 174 |
| 658 | antibiotics | 1 | 2 | 77 | 207 |
| 658 | Scanning electron microscopy | 1 | 2 | 77 | 281 |
| 676 | Anthropological Linguistics | 1 | 1 | 50 | 149 |
| 676 | Immunohematology | 1 | 1 | 102 | 303 |
| 676 | Blood group antigens | 1 | 1 | 96 | 293 |
| 676 | Hypertension in pregnancy | 2 | 1 | 13 | 59 |
| 676 | Mechanics | 1 | 1 | 295 | 743 |
| 676 | scholarly publishing | 2 | 1 | 27 | 200 |
| 676 | transport vesicles | 1 | 1 | 413 | 1556 |
| 683 | Pediatric Gastroenterology | 1 | 0 | 27 | 116 |
| 683 | Biofeedback | 1 | 0 | 11 | 40 |
| 683 | Open source software | 1 | 0 | 2 | 11 |
| 683 | Congenital heart disease | 1 | 0 | 2 | 10 |
| 683 | Sexual health | 3 | 0 | 100 | 711 |
| 683 | patents | 1 | 0 | 10 | 36 |
| 683 | implementation science | 2 | 0 | 9 | 29 |
| 683 | Microfluidics | 1 | 0 | 196 | 651 |
| 683 | Physical fitness | 2 | 0 | 70 | 311 |
| 683 | Social support | 1 | 0 | 20 | 83 |
| 683 | Library Science | 1 | 0 | 109 | 354 |
| 683 | Social environment | 1 | 0 | 24 | 90 |
| 683 | animal diseases | 1 | 0 | 47 | 151 |
| 683 | Germany | 1 | 0 | 106 | 243 |
| 683 | Cerebrospinal fluid | 2 | 0 | 6 | 40 |
| 683 | mammals | 1 | 0 | 187 | 589 |
| 683 | Consciousness | 1 | 0 | 41 | 147 |
| 683 | Pancreatic diseases | 1 | 0 | 72 | 113 |