| 1 | Science | 250 | 29.9K | 39 | 42 |
| 2 | Biotechnology | 29 | 24.9K | 172 | 11 |
| 3 | Bioengineering | 22 | 24.2K | 107 | 8 |
| 4 | Biochemical Engineering | 12 | 23.9K | 88 | 8 |
| 5 | Biology | 333 | 23.8K | 32 | 64 |
| 6 | Biochemistry | 351 | 17.6K | 25 | 37 |
| 7 | Chemistry | 279 | 15.9K | 90 | 100 |
| 8 | Physics | 79 | 14.9K | 117 | 73 |
| 9 | Microbiology | 172 | 13.4K | 38 | 26 |
| 10 | Natural history | 26 | 11.1K | 77 | 61 |
| 11 | Molecular Biology | 181 | 10.9K | 45 | 84 |
| 12 | Medicine | 200 | 10.2K | 62 | 67 |
| 13 | Pharmacology | 179 | 10.1K | 18 | 15 |
| 14 | natural products | 88 | 7.3K | 7 | 2 |
| 15 | Cytology | 59 | 6.8K | 72 | 97 |
| 16 | drug therapy | 136 | 5.7K | 10 | 15 |
| 17 | Research | 135 | 5.6K | 51 | 65 |
| 18 | Immunology | 60 | 5.6K | 53 | 44 |
| 19 | Cell Biology | 35 | 5.4K | 172 | 124 |
| 20 | Virology | 32 | 5.3K | 80 | 102 |
| 21 | Pharmaceutical Chemistry | 116 | 4.8K | 12 | 16 |
| 22 | Immunity | 46 | 4.6K | 17 | 35 |
| 23 | Pharmacognosy | 65 | 4.3K | 12 | 6 |
| 24 | Computational Biology | 68 | 4.1K | 14 | 28 |
| 25 | Microbial Ecology | 53 | 3.4K | 23 | 24 |
| 26 | biological factors | 23 | 3.1K | 30 | 7 |
| 27 | Toxicology | 96 | 2.9K | 31 | 36 |
| 28 | Therapeutics | 32 | 2.8K | 52 | 43 |
| 29 | nucleic acids | 18 | 2.4K | 43 | 39 |
| 30 | Systems Biology | 43 | 2.4K | 8 | 6 |
| 31 | Biomedical Engineering | 31 | 2.3K | 53 | 32 |
| 32 | Chemotherapy | 74 | 2.3K | 5 | 5 |
| 33 | Metabolic diseases | 13 | 2.3K | 147 | 32 |
| 34 | Medical innovations | 15 | 2.3K | 13 | 12 |
| 35 | Developmental Biology | 25 | 2.3K | 100 | 87 |
| 36 | Clinical Chemistry | 64 | 2.3K | 9 | 16 |
| 37 | Cardiovascular system | 29 | 2.1K | 11 | 18 |
| 38 | Host-parasite interactions | 32 | 2.1K | 12 | 20 |
| 39 | Homeostasis | 7 | 2.0K | 9 | 7 |
| 39 | Cell metabolism | 7 | 2.0K | 18 | 7 |
| 41 | drug development | 12 | 2.0K | 17 | 11 |
| 42 | Computer-Aided Design | 25 | 2.0K | 1 | 3 |
| 43 | Bioorganic chemistry | 51 | 1.9K | 16 | 16 |
| 44 | Nanotechnology | 36 | 1.9K | 286 | 280 |
| 45 | Bioinformatics | 21 | 1.8K | 43 | 39 |
| 46 | Organic Chemistry | 59 | 1.8K | 18 | 23 |
| 47 | Cell differentiation | 13 | 1.8K | 140 | 99 |
| 48 | Cancer | 24 | 1.7K | 192 | 156 |
| 49 | free radicals | 21 | 1.6K | 12 | 13 |
| 50 | Ecology | 18 | 1.6K | 951 | 610 |
| 51 | Pharmacy | 49 | 1.6K | 18 | 12 |
| 52 | mycoses | 18 | 1.6K | 9 | 11 |
| 52 | Bacterial infections | 17 | 1.6K | 18 | 14 |
| 54 | Pediatrics | 20 | 1.6K | 109 | 62 |
| 55 | Proteome | 38 | 1.5K | 7 | 11 |
| 56 | Physiology | 11 | 1.5K | 544 | 104 |
| 57 | Biophysics | 62 | 1.5K | 70 | 115 |
| 58 | Allergy | 11 | 1.4K | 31 | 38 |
| 59 | Immune system | 7 | 1.4K | 61 | 35 |
| 60 | Medical Microbiology | 19 | 1.4K | 42 | 35 |
| 61 | Neurochemistry | 27 | 1.3K | 39 | 44 |
| 62 | Analytical Chemistry | 31 | 1.3K | 60 | 57 |
| 63 | proteins | 43 | 1.3K | 17 | 36 |
| 64 | carcinogens | 32 | 1.2K | 10 | 12 |
| 65 | Molecular structure | 16 | 1.2K | 67 | 68 |
| 66 | Nutrition | 21 | 1.2K | 146 | 103 |
| 67 | Proteomics | 23 | 1.1K | 10 | 12 |
| 68 | Embryology | 10 | 1.1K | 230 | 138 |
| 69 | Anatomy | 9 | 1.1K | 381 | 140 |
| 70 | Drug delivery systems | 11 | 1.0K | 19 | 17 |
| 71 | Growth | 8 | 1.0K | 208 | 132 |
| 72 | Genetics | 16 | 1.0K | 206 | 229 |
| 73 | viruses | 23 | 1.0K | 29 | 44 |
| 74 | Oxidation-reduction | 10 | 897 | 6 | 12 |
| 75 | Physical Chemistry | 16 | 891 | 40 | 46 |
| 76 | Informatics | 23 | 878 | 9 | 11 |
| 77 | Neurology | 33 | 872 | 188 | 521 |
| 78 | Diagnostic microbiology | 6 | 865 | 43 | 30 |
| 79 | Virulence | 19 | 860 | 21 | 44 |
| 80 | Environmental Health | 19 | 838 | 149 | 176 |
| 81 | Oncology | 8 | 829 | 289 | 147 |
| 82 | Human genetics | 8 | 804 | 162 | 349 |
| 83 | infection | 24 | 789 | 14 | 22 |
| 84 | Cell death | 6 | 710 | 47 | 27 |
| 85 | Parenteral nutrition | 13 | 707 | 35 | 49 |
| 86 | Immunotherapy | 7 | 706 | 67 | 62 |
| 87 | Materials | 12 | 696 | 1383 | 1645 |
| 88 | Hypertension | 21 | 666 | 44 | 95 |
| 89 | Hematology | 16 | 656 | 340 | 232 |
| 89 | Cytogenetics | 10 | 656 | 79 | 97 |
| 91 | United Kingdom | 8 | 642 | 70 | 38 |
| 92 | Neurons | 4 | 637 | 101 | 188 |
| 93 | Enteral nutrition | 7 | 624 | 33 | 16 |
| 94 | Public Health | 18 | 620 | 318 | 401 |
| 95 | Microorganisms | 8 | 618 | 53 | 39 |
| 96 | nanoscience | 14 | 613 | 88 | 127 |
| 97 | Oxidative stress | 8 | 604 | 12 | 19 |
| 98 | Environmental Engineering | 10 | 584 | 131 | 120 |
| 99 | Biocompatible Materials | 19 | 571 | 131 | 241 |
| 99 | enzymes | 21 | 571 | 10 | 20 |
| 101 | antibiotics | 9 | 542 | 15 | 5 |
| 102 | United States | 26 | 529 | 208 | 260 |
| 103 | Materials Science | 8 | 526 | 666 | 369 |
| 104 | Endocrinology | 13 | 516 | 107 | 190 |
| 105 | Stem cells | 7 | 491 | 83 | 69 |
| 106 | Biomolecules | 3 | 480 | 195 | 16 |
| 106 | Structure-activity relationship | 3 | 480 | 19 | 10 |
| 108 | Pharmacogenetics | 15 | 478 | 16 | 24 |
| 109 | Medical genetics | 10 | 473 | 726 | 791 |
| 110 | drugs | 17 | 460 | 77 | 74 |
| 111 | Infections | 4 | 446 | 38 | 31 |
| 112 | Environment | 6 | 444 | 1127 | 1321 |
| 113 | Mass Spectrometry | 19 | 436 | 25 | 41 |
| 114 | Pollution | 10 | 429 | 523 | 1113 |
| 115 | Signal Transduction | 6 | 420 | 63 | 45 |
| 116 | Clinical Immunology | 5 | 419 | 43 | 18 |
| 117 | Metabolism | 12 | 412 | 217 | 315 |
| 118 | Polymers | 9 | 408 | 1113 | 491 |
| 119 | breastfeeding | 75 | 405 | 4 | 28 |
| 120 | Immunopathology | 4 | 397 | 97 | 35 |
| 121 | Antioxidants | 4 | 394 | 22 | 18 |
| 122 | Environmental Microbiology | 6 | 381 | 202 | 192 |
| 123 | Drug design | 10 | 380 | 33 | 34 |
| 124 | Genomics | 18 | 377 | 82 | 186 |
| 124 | environmental protection | 4 | 377 | 374 | 162 |
| 126 | Gene expression regulation | 6 | 366 | 56 | 68 |
| 127 | Carcinogenesis | 9 | 363 | 29 | 49 |
| 127 | Genetic regulation | 6 | 363 | 69 | 110 |
| 129 | Nanostructures | 7 | 360 | 65 | 97 |
| 130 | Molecular Pharmacology | 10 | 351 | 11 | 29 |
| 131 | protein | 14 | 342 | 54 | 122 |
| 132 | Sleep Disorders | 9 | 331 | 132 | 164 |
| 132 | Diabetes | 17 | 331 | 104 | 295 |
| 132 | Sleep | 9 | 331 | 131 | 165 |
| 135 | Oncogenes | 5 | 320 | 56 | 85 |
| 136 | Geriatrics | 12 | 312 | 359 | 494 |
| 137 | Medical Technology | 7 | 309 | 39 | 49 |
| 138 | Biological Systems | 4 | 293 | 23 | 14 |
| 139 | Diabetes mellitus | 15 | 292 | 86 | 255 |
| 140 | Psychopharmacology | 20 | 288 | 47 | 158 |
| 141 | mutagens | 9 | 283 | 23 | 58 |
| 142 | Medical Oncology | 9 | 277 | 114 | 140 |
| 143 | Critical Care | 6 | 275 | 86 | 95 |
| 143 | Critical Care Medicine | 6 | 275 | 65 | 93 |
| 143 | Clinical Pharmacology | 17 | 275 | 87 | 200 |
| 146 | genome | 11 | 273 | 60 | 196 |
| 147 | Genetic Research | 6 | 272 | 3 | 2 |
| 147 | Liver diseases | 9 | 272 | 83 | 350 |
| 149 | Analytical Toxicology | 18 | 271 | 3 | 5 |
| 150 | Environmental monitoring | 3 | 269 | 491 | 226 |
| 151 | Developmental Genetics | 3 | 260 | 90 | 94 |
| 151 | Bacteriology | 6 | 260 | 306 | 486 |
| 153 | Evolution | 2 | 254 | 1095 | 570 |
| 154 | Genetic engineering | 4 | 251 | 173 | 213 |
| 155 | viral genetics | 2 | 249 | 52 | 69 |
| 156 | Antibacterial agents | 7 | 245 | 13 | 12 |
| 157 | Environmental Policy | 2 | 244 | 392 | 225 |
| 157 | Environmental Law | 2 | 244 | 158 | 79 |
| 159 | Teaching | 44 | 243 | 12 | 76 |
| 160 | Psychiatry | 8 | 233 | 783 | 1175 |
| 161 | polymerization | 4 | 232 | 1715 | 613 |
| 162 | cytokines | 1 | 231 | 263 | 31 |
| 162 | Growth factors | 1 | 231 | 32 | 15 |
| 162 | Cytokine | 1 | 231 | 42 | 12 |
| 165 | Learning | 42 | 224 | 14 | 77 |
| 165 | biological evolution | 1 | 224 | 1146 | 359 |
| 167 | Colloids | 7 | 222 | 199 | 249 |
| 168 | Nanomedicine | 2 | 221 | 52 | 50 |
| 168 | glycoproteins | 2 | 221 | 34 | 15 |
| 168 | Glycoconjugates | 2 | 221 | 34 | 15 |
| 168 | Oligosaccharide | 2 | 221 | 23 | 12 |
| 168 | Carbohydrates | 2 | 221 | 32 | 15 |
| 168 | glycolipids | 2 | 221 | 34 | 15 |
| 174 | Obstetrics | 3 | 217 | 415 | 201 |
| 175 | Structural biology | 2 | 216 | 5 | 4 |
| 176 | sanitation | 6 | 213 | 73 | 159 |
| 177 | Neurophysiology | 6 | 204 | 236 | 475 |
| 178 | Molecular Microbiology | 6 | 202 | 138 | 220 |
| 179 | Botany | 7 | 201 | 1292 | 2082 |
| 179 | Synthetic biology | 3 | 201 | 22 | 15 |
| 181 | Thrombosis | 9 | 199 | 19 | 48 |
| 181 | cell physiology | 7 | 199 | 194 | 435 |
| 183 | Membranes | 4 | 198 | 81 | 85 |
| 184 | medical education | 20 | 197 | 58 | 193 |
| 184 | miniaturization | 4 | 197 | 126 | 178 |
| 186 | Hemodynamics | 4 | 191 | 33 | 45 |
| 187 | Chemical Engineering | 3 | 186 | 1723 | 1087 |
| 188 | Microelectronics | 3 | 181 | 218 | 160 |
| 189 | Transplantation | 3 | 170 | 695 | 907 |
| 190 | Crystallography | 1 | 168 | 168 | 30 |
| 190 | X-ray crystallography | 1 | 168 | 81 | 13 |
| 192 | Histology | 4 | 166 | 256 | 334 |
| 193 | Computational Chemistry | 2 | 165 | 257 | 85 |
| 193 | Hormones | 5 | 165 | 42 | 96 |
| 195 | Drug discovery | 6 | 161 | 7 | 7 |
| 196 | Kidney diseases | 2 | 156 | 69 | 49 |
| 197 | Green Chemistry | 2 | 153 | 1030 | 734 |
| 198 | Spectrum analysis | 3 | 152 | 592 | 376 |
| 199 | Emergency Medicine | 7 | 151 | 49 | 65 |
| 199 | Substance Abuse | 5 | 151 | 379 | 393 |
| 199 | Cardiovascular diseases | 2 | 151 | 143 | 80 |
| 202 | Hemostasis | 7 | 149 | 12 | 22 |
| 203 | Surface Chemistry | 6 | 148 | 238 | 326 |
| 203 | Psychophysiology | 3 | 148 | 805 | 766 |
| 205 | Multiple sclerosis | 3 | 142 | 24 | 9 |
| 206 | Genetic therapy | 3 | 141 | 102 | 143 |
| 207 | Safety management | 4 | 138 | 27 | 23 |
| 208 | Environmental Chemistry | 4 | 137 | 291 | 347 |
| 209 | Neurobiology | 5 | 136 | 164 | 428 |
| 210 | Environmental Management | 1 | 133 | 809 | 335 |
| 210 | Biofilms | 3 | 133 | 6 | 9 |
| 212 | Behavior | 8 | 130 | 291 | 801 |
| 213 | Metallurgy | 3 | 129 | 380 | 260 |
| 213 | Electrochemistry | 3 | 129 | 1042 | 590 |
| 215 | Pharmaceutical Technology | 5 | 128 | 324 | 345 |
| 215 | Parasitic Diseases | 6 | 128 | 63 | 118 |
| 217 | soil microbiology | 2 | 127 | 130 | 139 |
| 218 | Pharmacy management | 12 | 124 | 27 | 33 |
| 219 | Rheumatology | 5 | 121 | 267 | 311 |
| 220 | Medical Laboratory Science | 4 | 120 | 109 | 150 |
| 221 | Quality Assurance | 3 | 118 | 17 | 18 |
| 222 | Health Policy | 9 | 117 | 195 | 683 |
| 222 | gastrointestinal tract | 4 | 117 | 10 | 18 |
| 224 | Pharmacokinetics | 4 | 113 | 34 | 55 |
| 224 | Mental Disorders | 4 | 113 | 689 | 1146 |
| 224 | Visual Perception | 6 | 113 | 739 | 1504 |
| 224 | Memory | 6 | 113 | 749 | 1522 |
| 224 | Attention | 6 | 113 | 742 | 1515 |
| 224 | Perception | 6 | 113 | 748 | 1516 |
| 230 | Contraception | 5 | 109 | 33 | 55 |
| 231 | Geriatric Pharmacology | 3 | 108 | 14 | 18 |
| 231 | Schizophrenia | 1 | 108 | 272 | 211 |
| 231 | Elderly | 3 | 108 | 156 | 44 |
| 231 | older people | 3 | 108 | 205 | 124 |
| 235 | mutation | 3 | 105 | 51 | 66 |
| 235 | Chromosomes | 3 | 105 | 87 | 105 |
| 235 | arthritis | 4 | 105 | 153 | 249 |
| 238 | Lung Transplantation | 5 | 104 | 19 | 42 |
| 238 | Heart transplantation | 5 | 104 | 19 | 42 |
| 238 | Reproductive toxicology | 4 | 104 | 27 | 39 |
| 241 | Nervous system | 2 | 103 | 737 | 1180 |
| 242 | Cellular senescence | 2 | 101 | 44 | 65 |
| 243 | Physical organic chemistry | 5 | 100 | 101 | 99 |
| 243 | plant molecular biology | 2 | 100 | 765 | 1068 |
| 243 | Plants | 2 | 100 | 994 | 1218 |
| 243 | Plant cells | 2 | 100 | 999 | 1403 |
| 247 | energy conservation | 1 | 99 | 1082 | 288 |
| 247 | drug resistance | 4 | 99 | 22 | 54 |
| 247 | Parasitology | 8 | 99 | 74 | 178 |
| 250 | Microscopy | 2 | 98 | 398 | 168 |
| 251 | epilepsy | 3 | 96 | 42 | 58 |
| 251 | Lipids | 3 | 96 | 160 | 221 |
| 253 | Obesity | 6 | 95 | 763 | 2009 |
| 254 | Heart Failure | 5 | 93 | 16 | 35 |
| 254 | pain | 3 | 93 | 314 | 460 |
| 256 | Surgery | 3 | 91 | 180 | 418 |
| 256 | Alternative Medicine | 5 | 91 | 62 | 175 |
| 256 | complementary therapies | 5 | 91 | 77 | 197 |
| 259 | pollutants | 2 | 89 | 382 | 348 |
| 259 | Environmental pollutants | 2 | 89 | 651 | 493 |
| 261 | Meteorology | 1 | 88 | 707 | 469 |
| 261 | Dementia | 6 | 88 | 574 | 1330 |
| 261 | Alzheimer's disease | 6 | 88 | 579 | 1349 |
| 264 | DNA repair | 2 | 86 | 21 | 22 |
| 264 | Cheminformatics | 3 | 86 | 60 | 212 |
| 266 | Adolescent Medicine | 3 | 84 | 71 | 130 |
| 266 | Histocompatibility Testing | 1 | 84 | 41 | 29 |
| 268 | Pathology | 3 | 83 | 827 | 1524 |
| 268 | Research Design | 4 | 83 | 118 | 296 |
| 270 | Developmental Immunology | 2 | 81 | 78 | 90 |
| 271 | Nanostructured Materials | 4 | 80 | 2305 | 4115 |
| 271 | environmental pollution | 2 | 80 | 1105 | 1064 |
| 273 | Clinical Trials | 3 | 78 | 77 | 63 |
| 274 | Retina | 1 | 74 | 18 | 45 |
| 274 | Soft Condensed Matter | 1 | 74 | 124 | 84 |
| 274 | eye | 1 | 74 | 22 | 48 |
| 274 | biopolymers | 1 | 74 | 808 | 421 |
| 274 | Mental illness | 3 | 74 | 505 | 1023 |
| 279 | Child | 11 | 73 | 382 | 1630 |
| 279 | Algal blooms | 1 | 73 | 29 | 29 |
| 279 | Cyanobacteria | 1 | 73 | 29 | 29 |
| 279 | microalgae | 1 | 73 | 29 | 29 |
| 283 | Education | 6 | 72 | 374 | 673 |
| 283 | venom | 5 | 72 | 26 | 54 |
| 283 | Toxins | 5 | 72 | 30 | 57 |
| 286 | Photochemistry | 3 | 71 | 271 | 370 |
| 286 | Light | 3 | 71 | 218 | 355 |
| 286 | amino acids | 2 | 71 | 34 | 38 |
| 289 | Respiration | 3 | 68 | 91 | 198 |
| 290 | Surface-Active Agents | 2 | 65 | 67 | 115 |
| 290 | Endocrine glands | 1 | 65 | 21 | 50 |
| 290 | Surface properties | 2 | 65 | 71 | 128 |
| 293 | Women's health | 2 | 64 | 176 | 176 |
| 294 | Electrical Engineering | 1 | 63 | 1214 | 284 |
| 294 | Chromatographic analysis | 3 | 63 | 704 | 661 |
| 296 | Osteoporosis | 1 | 62 | 40 | 31 |
| 297 | Psychoneuroimmunology | 1 | 60 | 118 | 125 |
| 297 | Neuroimmunology | 1 | 60 | 126 | 136 |
| 297 | Health insurance | 3 | 60 | 79 | 179 |
| 300 | Chemical Ecology | 2 | 57 | 38 | 62 |
| 300 | pheromones | 2 | 57 | 35 | 62 |
| 302 | Biopharmaceutics | 3 | 56 | 58 | 131 |
| 302 | Electrophoresis | 2 | 56 | 1163 | 1045 |
| 302 | Chromatography | 2 | 56 | 721 | 608 |
| 302 | Chemical analysis | 3 | 56 | 63 | 119 |
| 306 | Information Systems | 4 | 55 | 37 | 104 |
| 306 | Pharmacogenomics | 5 | 55 | 10 | 41 |
| 306 | Vaccines | 3 | 55 | 167 | 312 |
| 309 | Disease management | 4 | 54 | 8 | 13 |
| 309 | Steroids | 1 | 54 | 262 | 205 |
| 309 | alcoholism | 10 | 54 | 191 | 1246 |
| 312 | Psychology | 1 | 53 | 5136 | 3616 |
| 312 | dietary supplements | 2 | 53 | 45 | 72 |
| 312 | DNA methylation | 1 | 53 | 41 | 62 |
| 315 | Nanoparticles | 3 | 52 | 2220 | 4466 |
| 316 | peptides | 5 | 51 | 133 | 460 |
| 317 | Health | 4 | 50 | 607 | 1571 |
| 317 | cloning | 1 | 50 | 315 | 679 |
| 319 | pediatric pharmacology | 8 | 49 | 4 | 13 |
| 319 | mammals | 4 | 49 | 54 | 195 |
| 321 | Agricultural Chemistry | 2 | 48 | 253 | 349 |
| 321 | Palliative Care | 6 | 48 | 39 | 130 |
| 321 | Holistic Health | 1 | 48 | 69 | 58 |
| 321 | Respiratory system | 2 | 48 | 23 | 78 |
| 321 | nuclear magnetic resonance spectroscopy | 5 | 48 | 47 | 110 |
| 321 | allied health | 1 | 48 | 43 | 43 |
| 327 | Bioenergetics | 1 | 47 | 127 | 140 |
| 327 | Energy metabolism | 1 | 47 | 93 | 104 |
| 327 | cell membrane | 1 | 47 | 96 | 101 |
| 327 | Bacterial diseases | 3 | 47 | 12 | 28 |
| 331 | Ophthalmology | 4 | 44 | 106 | 370 |
| 331 | Opioids | 5 | 44 | 1 | 1 |
| 333 | Epidemiology | 4 | 43 | 740 | 1846 |
| 333 | Analytical Biochemistry | 2 | 43 | 148 | 248 |
| 333 | disease vectors | 3 | 43 | 50 | 113 |
| 333 | Parasites | 3 | 43 | 119 | 266 |
| 337 | Engineering | 2 | 42 | 792 | 723 |
| 337 | Data Mining | 4 | 42 | 76 | 332 |
| 339 | China | 1 | 41 | 1011 | 660 |
| 339 | Cerebral cortex | 1 | 41 | 253 | 311 |
| 341 | ethanol | 8 | 40 | 13 | 91 |
| 342 | Industrial Microbiology | 2 | 39 | 256 | 620 |
| 342 | data collection | 3 | 39 | 74 | 180 |
| 342 | drug evaluation | 5 | 39 | 93 | 377 |
| 345 | Nursing | 3 | 38 | 851 | 1316 |
| 345 | Biosensors | 1 | 38 | 166 | 295 |
| 347 | Catalysis | 2 | 37 | 1806 | 2302 |
| 348 | Immunotoxicology | 2 | 36 | 17 | 27 |
| 349 | hospice care | 3 | 35 | 51 | 90 |
| 349 | Neuropharmacology | 1 | 35 | 205 | 191 |
| 349 | Leukemia | 2 | 35 | 123 | 293 |
| 349 | Culture techniques | 3 | 35 | 77 | 248 |
| 349 | Exercise | 1 | 35 | 429 | 421 |
| 349 | sports injuries | 1 | 35 | 107 | 58 |
| 355 | Environmental Toxicology | 1 | 34 | 889 | 967 |
| 355 | Neonatology | 1 | 34 | 106 | 111 |
| 355 | health behavior | 5 | 34 | 97 | 365 |
| 355 | Child Development | 1 | 34 | 1294 | 1246 |
| 355 | environmental exposure | 3 | 34 | 255 | 650 |
| 360 | Molecular recognition | 1 | 32 | 152 | 148 |
| 360 | Hematopoietic stem cell transplantation | 1 | 32 | 56 | 94 |
| 360 | biomedicine | 3 | 32 | 48 | 221 |
| 360 | gene mapping | 5 | 32 | 148 | 703 |
| 364 | Food Safety | 1 | 31 | 261 | 199 |
| 364 | food industry | 1 | 31 | 54 | 47 |
| 364 | Aging | 1 | 31 | 1137 | 1107 |
| 367 | Telemedicine | 2 | 30 | 41 | 101 |
| 367 | Precision medicine | 2 | 30 | 24 | 41 |
| 367 | Molecular evolution | 1 | 30 | 389 | 582 |
| 367 | biological agents | 2 | 30 | 49 | 28 |
| 371 | liver | 2 | 29 | 103 | 463 |
| 372 | Metabolic syndrome | 1 | 28 | 25 | 29 |
| 372 | Randomized Controlled Trials | 1 | 28 | 200 | 201 |
| 372 | Tropical Medicine | 2 | 28 | 923 | 1288 |
| 375 | Kinetics | 2 | 27 | 99 | 126 |
| 375 | occupational health and safety | 2 | 27 | 26 | 38 |
| 375 | industrial hygiene | 2 | 27 | 118 | 161 |
| 375 | Reproductive health | 1 | 27 | 165 | 216 |
| 375 | big data | 1 | 27 | 35 | 37 |
| 375 | Magnetic Resonance Spectroscopy | 3 | 27 | 414 | 1055 |
| 375 | Food | 3 | 27 | 1034 | 3468 |
| 375 | Autoimmune diseases | 1 | 27 | 58 | 124 |
| 375 | NMR | 3 | 27 | 67 | 157 |
| 375 | pharmaceutical industry | 4 | 27 | 45 | 113 |
| 375 | magnetic resonance | 3 | 27 | 76 | 177 |
| 375 | Birth control | 1 | 27 | 157 | 199 |
| 387 | Chromosome mapping | 4 | 26 | 142 | 633 |
| 387 | cell interaction | 2 | 26 | 131 | 436 |
| 387 | prostaglandins | 1 | 26 | 223 | 304 |
| 387 | Immune response | 1 | 26 | 5 | 7 |
| 387 | Biodiversity | 3 | 26 | 852 | 1983 |
| 392 | Histochemistry | 1 | 25 | 257 | 330 |
| 392 | Evidence-Based Medicine | 2 | 25 | 179 | 564 |
| 392 | histological techniques | 1 | 25 | 87 | 263 |
| 392 | biological monitoring | 1 | 25 | 62 | 77 |
| 396 | Developmental Toxicology | 1 | 24 | 38 | 58 |
| 396 | Primary health care | 4 | 24 | 220 | 881 |
| 396 | teratogens | 1 | 24 | 38 | 58 |
| 399 | Inflammation | 1 | 23 | 255 | 434 |
| 400 | Optics | 2 | 22 | 1052 | 1133 |
| 400 | Atherosclerosis | 2 | 22 | 12 | 45 |
| 402 | nuclear magnetic resonance | 2 | 21 | 531 | 1094 |
| 403 | Sustainable Engineering | 1 | 20 | 2043 | 2875 |
| 403 | Industrial Safety | 1 | 20 | 165 | 229 |
| 403 | Geochemistry | 1 | 20 | 981 | 1454 |
| 403 | Biogeochemistry | 1 | 20 | 110 | 201 |
| 403 | Organic Geochemistry | 1 | 20 | 27 | 44 |
| 403 | Cosmochemistry | 1 | 20 | 68 | 90 |
| 409 | Genetic disorders | 1 | 19 | 880 | 1518 |
| 409 | Cost control | 2 | 19 | 17 | 35 |
| 409 | scientific societies | 1 | 19 | 923 | 1582 |
| 409 | health services | 2 | 19 | 405 | 783 |
| 413 | Lipid metabolism | 1 | 18 | 53 | 100 |
| 413 | occupational diseases | 1 | 18 | 485 | 766 |
| 413 | Lipid | 1 | 18 | 50 | 100 |
| 416 | Pediatric Hematology | 1 | 17 | 56 | 95 |
| 416 | Lymphoma | 1 | 17 | 84 | 42 |
| 416 | Multiple Myeloma | 1 | 17 | 83 | 35 |
| 416 | gene therapy | 2 | 17 | 144 | 667 |
| 420 | visualization | 6 | 16 | 159 | 895 |
| 420 | Solutions | 1 | 16 | 16 | 21 |
| 422 | Quantum Chemistry | 1 | 15 | 442 | 437 |
| 422 | Food additives | 2 | 15 | 89 | 253 |
| 422 | Hospitals | 4 | 15 | 207 | 1161 |
| 425 | Nephrology | 1 | 14 | 84 | 204 |
| 425 | preventive medicine | 1 | 14 | 347 | 623 |
| 425 | Health promotion | 1 | 14 | 468 | 775 |
| 428 | Asthma | 3 | 13 | 45 | 249 |
| 428 | Bioinorganic chemistry | 1 | 13 | 1091 | 1363 |
| 428 | Plant physiology | 1 | 13 | 1364 | 2501 |
| 428 | biocatalysis | 1 | 13 | 22 | 53 |
| 428 | Homogeneous catalysis | 1 | 13 | 22 | 53 |
| 428 | Heterogeneous catalysis | 1 | 13 | 22 | 53 |
| 434 | Dermatology | 1 | 12 | 2489 | 2858 |
| 434 | Functional Genomics | 1 | 12 | 46 | 122 |
| 434 | Long-Term Care | 1 | 12 | 119 | 211 |
| 434 | Long-term care facilities | 1 | 12 | 119 | 211 |
| 434 | Antiviral agents | 1 | 12 | 26 | 56 |
| 434 | synthesis | 2 | 12 | 83 | 236 |
| 440 | actuators | 1 | 11 | 275 | 535 |
| 440 | Information Science | 1 | 11 | 452 | 917 |
| 440 | transducers | 1 | 11 | 275 | 535 |
| 443 | Enzyme inhibitors | 1 | 10 | 35 | 83 |
| 443 | technical education | 1 | 10 | 50 | 80 |
| 443 | Cannabis | 1 | 10 | 10 | 35 |
| 443 | cannabinoids | 1 | 10 | 10 | 32 |
| 447 | Geriatric Nursing | 1 | 9 | 269 | 492 |
| 447 | Smoking | 1 | 9 | 206 | 402 |
| 447 | drug addiction | 1 | 9 | 1274 | 2456 |
| 447 | drug interactions | 1 | 9 | 12 | 20 |
| 451 | Health Services Research | 1 | 8 | 895 | 1987 |
| 451 | Functional foods | 2 | 8 | 17 | 73 |
| 451 | Supramolecular chemistry | 1 | 8 | 21 | 33 |
| 451 | isomerism | 2 | 8 | 136 | 479 |
| 451 | Phytotherapy | 2 | 8 | 60 | 237 |
| 451 | Chirality | 2 | 8 | 136 | 479 |
| 457 | Health Services Administration | 2 | 7 | 455 | 1963 |
| 457 | Total Quality Management | 1 | 7 | 42 | 82 |
| 457 | Organ transplantation | 2 | 7 | 655 | 1836 |
| 457 | Infertility | 3 | 7 | 69 | 366 |
| 457 | Mitochondria | 2 | 7 | 24 | 110 |
| 457 | fertility | 3 | 7 | 70 | 376 |
| 463 | Orthopedics | 1 | 6 | 561 | 1154 |
| 463 | Health Education | 1 | 6 | 714 | 1567 |
| 463 | Nonlinear Dynamics | 1 | 6 | 269 | 516 |
| 463 | Statistical physics | 1 | 6 | 516 | 864 |
| 463 | DNA polymerases | 1 | 6 | 102 | 254 |
| 463 | Digestive system diseases | 1 | 6 | 143 | 527 |
| 469 | Artificial Organs | 2 | 5 | 275 | 1357 |
| 469 | Herbal medicine | 1 | 5 | 67 | 230 |
| 469 | behavior modification | 1 | 5 | 93 | 197 |
| 469 | behavior therapy | 1 | 5 | 217 | 402 |
| 469 | Thorax | 1 | 5 | 65 | 188 |
| 474 | Public Policy | 1 | 4 | 481 | 1219 |
| 474 | Biomarkers | 1 | 4 | 44 | 136 |
| 474 | Gerontology | 1 | 4 | 793 | 1621 |
| 474 | Antibodies | 1 | 4 | 68 | 212 |
| 474 | Antigens | 1 | 4 | 185 | 567 |
| 474 | biochemical markers | 1 | 4 | 239 | 995 |
| 480 | Social Sciences | 1 | 3 | 1539 | 3106 |
| 480 | Humanities | 1 | 3 | 351 | 762 |
| 480 | Urology | 1 | 3 | 786 | 1777 |
| 480 | Mental Health | 2 | 3 | 518 | 1847 |
| 480 | Signal Processing | 1 | 3 | 523 | 1204 |
| 480 | Image Processing | 1 | 3 | 667 | 1587 |
| 480 | Feasibility studies | 1 | 3 | 48 | 109 |
| 480 | Bipolar Disorder | 1 | 3 | 600 | 1388 |
| 480 | System analysis | 1 | 3 | 405 | 1085 |
| 480 | vascular diseases | 1 | 3 | 76 | 269 |
| 480 | Genes | 2 | 3 | 196 | 1102 |
| 491 | Neurotoxicology | 1 | 2 | 74 | 205 |
| 491 | Transportation | 1 | 2 | 157 | 464 |
| 491 | healthcare disparities | 1 | 2 | 114 | 271 |
| 491 | Sexuality | 1 | 2 | 69 | 143 |
| 491 | Telecommunication | 1 | 2 | 1002 | 2031 |
| 491 | homosexuality | 1 | 2 | 74 | 204 |
| 497 | Mathematics | 1 | 1 | 4868 | 7671 |
| 497 | Diagnostic Imaging | 1 | 1 | 608 | 2016 |
| 497 | Aquatic ecology | 1 | 1 | 567 | 1688 |
| 500 | Sports Medicine | 2 | 0 | 868 | 3966 |
| 500 | Nutrition physiology | 1 | 0 | 231 | 802 |
| 500 | health services accessibility | 1 | 0 | 202 | 589 |
| 500 | Organometallic chemistry | 1 | 0 | 1790 | 3603 |
| 500 | Immunochemistry | 2 | 0 | 73 | 441 |
| 500 | Nutritional support | 1 | 0 | 16 | 57 |
| 500 | Travel | 2 | 0 | 96 | 570 |
| 500 | Socioeconomic Factors | 1 | 0 | 119 | 360 |
| 500 | implementation science | 1 | 0 | 15 | 29 |
| 500 | Mycology | 1 | 0 | 297 | 581 |
| 500 | Organometallic compounds | 1 | 0 | 953 | 2139 |
| 500 | Endocrine system | 1 | 0 | 88 | 174 |