| 1 | Medicine | 431 | 137.4K | 866 | 122 |
| 2 | Public Health | 245 | 114.0K | 465 | 23 |
| 3 | Epidemiology | 495 | 83.9K | 96 | 17 |
| 4 | Chronic diseases | 380 | 79.0K | 4 | 2 |
| 5 | Research Design | 118 | 23.1K | 52 | 17 |
| 6 | Research | 200 | 11.9K | 1225 | 773 |
| 7 | Science | 186 | 11.2K | 1670 | 1914 |
| 8 | United States | 27 | 7.0K | 2133 | 401 |
| 9 | finance | 2 | 5.8K | 3082 | 99 |
| 10 | Health Services Research | 125 | 5.7K | 105 | 80 |
| 11 | Health Policy | 112 | 4.4K | 215 | 153 |
| 12 | Oncology | 19 | 4.3K | 1053 | 561 |
| 13 | Surgery | 18 | 2.6K | 1141 | 691 |
| 14 | Psychiatry | 63 | 2.6K | 1210 | 1188 |
| 15 | Vaccines | 85 | 2.6K | 210 | 239 |
| 16 | Environmental Health | 39 | 2.5K | 1770 | 1292 |
| 17 | Nutrition | 44 | 2.5K | 1357 | 963 |
| 18 | Mental Disorders | 42 | 2.4K | 899 | 771 |
| 19 | Health Education | 40 | 2.3K | 453 | 244 |
| 20 | counseling | 30 | 2.2K | 375 | 149 |
| 21 | Patient education | 29 | 2.2K | 127 | 55 |
| 22 | Physical Therapy | 5 | 2.2K | 1287 | 221 |
| 23 | Environment | 27 | 2.1K | 2093 | 1862 |
| 24 | Ecology | 28 | 2.1K | 2828 | 2136 |
| 25 | Primary health care | 50 | 2.0K | 301 | 191 |
| 26 | pain | 27 | 1.9K | 463 | 341 |
| 27 | Metabolism | 25 | 1.8K | 1357 | 1082 |
| 28 | Pediatrics | 37 | 1.8K | 866 | 820 |
| 29 | Statistics | 18 | 1.7K | 1347 | 485 |
| 29 | Biometrics | 18 | 1.7K | 466 | 177 |
| 31 | alcoholism | 11 | 1.7K | 924 | 326 |
| 32 | Obesity | 25 | 1.7K | 826 | 585 |
| 33 | drug addiction | 7 | 1.6K | 924 | 271 |
| 34 | scholarly publishing | 6 | 1.6K | 68 | 1 |
| 35 | Environmental Policy | 21 | 1.6K | 1293 | 952 |
| 36 | Environmental monitoring | 20 | 1.6K | 1803 | 1126 |
| 37 | environmental protection | 19 | 1.6K | 1533 | 833 |
| 38 | peer review | 5 | 1.5K | 59 | 1 |
| 39 | Environmental Engineering | 19 | 1.5K | 1777 | 1089 |
| 39 | Environmental Law | 18 | 1.5K | 372 | 302 |
| 41 | Randomized Controlled Trials | 56 | 1.5K | 126 | 78 |
| 42 | Diet | 22 | 1.4K | 902 | 730 |
| 43 | Decision making | 30 | 1.4K | 319 | 250 |
| 44 | Biology | 23 | 1.3K | 5514 | 5272 |
| 45 | Hematology | 33 | 1.3K | 1645 | 1318 |
| 46 | fertility | 21 | 1.3K | 509 | 375 |
| 47 | Infertility | 17 | 1.3K | 582 | 361 |
| 48 | Psychology | 20 | 1.2K | 2492 | 1509 |
| 49 | Obstetrics | 26 | 1.2K | 1111 | 741 |
| 50 | Molecular Biology | 14 | 1.2K | 5423 | 4035 |
| 51 | Diabetes | 28 | 1.1K | 906 | 1082 |
| 52 | Biochemistry | 14 | 1.1K | 6120 | 4229 |
| 53 | Reproduction | 19 | 968 | 1180 | 818 |
| 54 | Transplantation | 8 | 922 | 1016 | 586 |
| 55 | health planning | 22 | 853 | 723 | 411 |
| 56 | Cardiovascular diseases | 9 | 845 | 1176 | 532 |
| 57 | Immunotherapy | 38 | 781 | 448 | 995 |
| 58 | Cancer | 17 | 776 | 2189 | 2080 |
| 59 | Alternative Medicine | 46 | 756 | 264 | 393 |
| 59 | complementary therapies | 46 | 756 | 284 | 405 |
| 61 | Pharmaceutical Chemistry | 7 | 747 | 3445 | 1940 |
| 62 | Child | 20 | 742 | 1161 | 866 |
| 63 | Geriatrics | 24 | 734 | 1288 | 1172 |
| 64 | drug therapy | 25 | 726 | 1026 | 1088 |
| 65 | Clinical Chemistry | 6 | 722 | 2859 | 1440 |
| 65 | Adolescent | 18 | 722 | 968 | 700 |
| 67 | Quality of life | 15 | 702 | 605 | 524 |
| 68 | Embryology | 6 | 673 | 1456 | 967 |
| 68 | Microbiology | 11 | 673 | 4867 | 4120 |
| 70 | Reproductive health | 7 | 672 | 559 | 213 |
| 71 | Medical Microbiology | 10 | 671 | 1711 | 1445 |
| 72 | rehabilitation | 13 | 656 | 1240 | 851 |
| 73 | Liver diseases | 10 | 635 | 1076 | 1083 |
| 74 | Europe | 32 | 623 | 1111 | 1146 |
| 75 | infection | 12 | 616 | 1019 | 876 |
| 76 | United Kingdom | 23 | 604 | 607 | 837 |
| 77 | Zoology | 8 | 603 | 2077 | 936 |
| 78 | risk factors | 4 | 587 | 799 | 273 |
| 79 | Contraception | 7 | 582 | 442 | 197 |
| 80 | Long-Term Care | 8 | 571 | 359 | 266 |
| 80 | Long-term care facilities | 8 | 571 | 353 | 265 |
| 80 | Pollution | 17 | 571 | 3038 | 3441 |
| 83 | Birth control | 4 | 553 | 431 | 141 |
| 84 | Pharmacology | 26 | 551 | 2605 | 3223 |
| 84 | Toxicology | 19 | 551 | 2582 | 2720 |
| 86 | Mental Health Services | 5 | 546 | 1236 | 413 |
| 87 | Genetics | 7 | 543 | 3650 | 2904 |
| 88 | Allergy | 9 | 535 | 968 | 1054 |
| 89 | Fisheries | 18 | 524 | 769 | 744 |
| 90 | preventive medicine | 12 | 523 | 750 | 694 |
| 91 | Dermatology | 13 | 512 | 1137 | 915 |
| 92 | Enteral nutrition | 5 | 507 | 898 | 483 |
| 92 | Parenteral nutrition | 5 | 507 | 1102 | 618 |
| 94 | Neurology | 22 | 485 | 2898 | 3663 |
| 95 | industrial hygiene | 8 | 484 | 733 | 201 |
| 96 | Emergency Medicine | 28 | 482 | 536 | 600 |
| 97 | environmental pollution | 16 | 479 | 2481 | 2855 |
| 98 | Therapeutics | 6 | 468 | 1672 | 1204 |
| 99 | Visual Perception | 1 | 454 | 3728 | 968 |
| 99 | Memory | 1 | 454 | 3934 | 1122 |
| 99 | Attention | 1 | 454 | 3889 | 1014 |
| 99 | Perception | 1 | 454 | 3986 | 1098 |
| 103 | Immunology | 7 | 443 | 3430 | 2853 |
| 104 | Global Health | 12 | 438 | 495 | 281 |
| 105 | Environmental pollutants | 13 | 430 | 1215 | 1270 |
| 106 | Substance Abuse | 4 | 429 | 1612 | 703 |
| 107 | Vaccination | 10 | 423 | 75 | 64 |
| 108 | Emergency Medical Services | 23 | 419 | 166 | 187 |
| 109 | Aging | 11 | 414 | 2019 | 1646 |
| 110 | Infections | 7 | 411 | 983 | 924 |
| 110 | Parasitic Diseases | 7 | 411 | 1773 | 1261 |
| 112 | Nutrition physiology | 5 | 408 | 666 | 371 |
| 113 | Schizophrenia | 24 | 398 | 404 | 738 |
| 114 | blood transfusion | 2 | 382 | 1294 | 342 |
| 115 | Women's health | 9 | 381 | 831 | 549 |
| 116 | Tropical Medicine | 11 | 380 | 1157 | 786 |
| 117 | Health promotion | 14 | 378 | 736 | 799 |
| 118 | Environmental Chemistry | 11 | 375 | 1253 | 1534 |
| 118 | pollutants | 11 | 375 | 1081 | 1175 |
| 120 | Geriatric Oncology | 9 | 368 | 319 | 322 |
| 121 | Physics | 5 | 361 | 9386 | 8227 |
| 122 | Evidence-Based Medicine | 29 | 359 | 237 | 410 |
| 123 | Clinical Trials | 7 | 344 | 389 | 228 |
| 124 | disease outbreaks | 3 | 343 | 700 | 334 |
| 124 | Epidemics | 3 | 343 | 672 | 329 |
| 126 | Geriatric Psychiatry | 5 | 342 | 1037 | 642 |
| 127 | Diabetes mellitus | 16 | 335 | 1195 | 1919 |
| 128 | Critical Care | 6 | 333 | 1575 | 1572 |
| 129 | Oxidative stress | 1 | 332 | 2308 | 832 |
| 129 | free radicals | 1 | 332 | 2758 | 1198 |
| 129 | Oxidation-reduction | 1 | 332 | 1609 | 788 |
| 132 | Critical Care Medicine | 6 | 325 | 1471 | 1568 |
| 133 | Geography | 2 | 321 | 3333 | 1291 |
| 134 | Clinical Pharmacology | 13 | 319 | 850 | 900 |
| 135 | China | 10 | 315 | 1867 | 1449 |
| 136 | Ophthalmology | 10 | 312 | 1288 | 1242 |
| 136 | Human Geography | 1 | 312 | 2098 | 511 |
| 138 | Chemotherapy | 9 | 303 | 1089 | 1016 |
| 139 | Sports Medicine | 14 | 301 | 1489 | 1446 |
| 140 | Genetic epidemiology | 1 | 298 | 668 | 178 |
| 140 | heredity | 1 | 298 | 1521 | 320 |
| 142 | medical education | 20 | 296 | 764 | 994 |
| 143 | animals | 3 | 292 | 1586 | 527 |
| 144 | Natural history | 6 | 256 | 4022 | 5862 |
| 145 | Conservation Biology | 2 | 254 | 1743 | 927 |
| 146 | Wildlife management | 7 | 251 | 433 | 275 |
| 147 | Engineering | 5 | 247 | 4527 | 2436 |
| 147 | System analysis | 6 | 247 | 2128 | 1431 |
| 149 | preimplantation genetic diagnosis | 6 | 245 | 351 | 228 |
| 149 | embryo transfer | 6 | 245 | 373 | 239 |
| 151 | occupational diseases | 8 | 242 | 638 | 657 |
| 152 | Food Microbiology | 3 | 241 | 1547 | 1145 |
| 153 | Chemistry | 10 | 240 | 7479 | 8409 |
| 154 | Nuclear Medicine | 2 | 228 | 1677 | 835 |
| 154 | Diagnostic Imaging | 2 | 228 | 3233 | 1532 |
| 154 | Molecular Imaging | 2 | 228 | 1063 | 665 |
| 154 | Library Science | 6 | 228 | 1002 | 284 |
| 158 | Regional Planning | 3 | 227 | 1829 | 939 |
| 158 | India | 10 | 227 | 967 | 374 |
| 160 | Urology | 11 | 223 | 1389 | 1664 |
| 161 | Endocrinology | 10 | 211 | 2403 | 3187 |
| 161 | Alzheimer's disease | 9 | 211 | 1113 | 983 |
| 163 | Ethics | 6 | 209 | 764 | 429 |
| 164 | Orthopedics | 9 | 208 | 1193 | 1326 |
| 165 | Travel | 6 | 207 | 689 | 433 |
| 165 | Brain | 3 | 207 | 3259 | 2441 |
| 167 | Bacterial infections | 5 | 205 | 865 | 1063 |
| 168 | Mental illness | 7 | 203 | 1760 | 2135 |
| 169 | Cell Biology | 7 | 202 | 3708 | 4431 |
| 170 | environmental exposure | 7 | 200 | 1471 | 1626 |
| 171 | Occupational Health | 7 | 199 | 870 | 662 |
| 172 | Neurosurgery | 7 | 198 | 979 | 1031 |
| 173 | Animal ecology | 2 | 189 | 1689 | 921 |
| 174 | Globalization | 1 | 188 | 1244 | 327 |
| 174 | international cooperation | 1 | 188 | 1332 | 429 |
| 176 | Fishery management | 12 | 187 | 434 | 563 |
| 177 | Nutritional support | 1 | 185 | 411 | 183 |
| 178 | Spine | 3 | 184 | 927 | 773 |
| 179 | Nervous system | 5 | 181 | 2558 | 2698 |
| 180 | Food | 4 | 179 | 3414 | 2857 |
| 181 | Human genetics | 1 | 178 | 4076 | 3837 |
| 182 | Tourism | 2 | 175 | 2162 | 1366 |
| 183 | community participation | 7 | 174 | 56 | 58 |
| 183 | disabilities | 5 | 174 | 647 | 541 |
| 183 | Faculty | 7 | 174 | 56 | 58 |
| 186 | Behavior | 6 | 173 | 2939 | 3444 |
| 187 | Environmental Toxicology | 3 | 172 | 3012 | 2600 |
| 188 | Medical Ethics | 11 | 168 | 604 | 657 |
| 189 | Carcinogenesis | 8 | 166 | 708 | 1147 |
| 190 | Transportation | 8 | 165 | 1149 | 1313 |
| 191 | Medical Oncology | 3 | 163 | 2712 | 2077 |
| 191 | Africa | 20 | 163 | 541 | 813 |
| 193 | Social Sciences | 4 | 162 | 4056 | 2207 |
| 193 | Australia | 5 | 162 | 1859 | 1316 |
| 195 | Public Policy | 6 | 157 | 1496 | 1596 |
| 196 | health services accessibility | 10 | 155 | 501 | 742 |
| 197 | food technology | 2 | 150 | 3566 | 2486 |
| 198 | Developing countries | 9 | 144 | 1577 | 2062 |
| 199 | Socioeconomic Factors | 6 | 141 | 553 | 680 |
| 200 | Autoimmunity | 1 | 139 | 1536 | 997 |
| 201 | Social work | 3 | 138 | 1820 | 943 |
| 202 | Industrial Engineering | 1 | 135 | 3503 | 1663 |
| 202 | Roads | 7 | 135 | 554 | 489 |
| 204 | Systems Analysis | 4 | 134 | 1115 | 832 |
| 204 | Thrombosis | 6 | 134 | 1059 | 1281 |
| 206 | Hemostasis | 5 | 132 | 825 | 787 |
| 207 | Public Administration | 7 | 128 | 1051 | 938 |
| 207 | Risk Management | 18 | 128 | 188 | 637 |
| 207 | Health Risk Assessment | 18 | 128 | 61 | 286 |
| 207 | Jurisprudence | 18 | 128 | 364 | 701 |
| 211 | Malaria | 3 | 124 | 936 | 766 |
| 212 | Freshwater invertebrates | 1 | 123 | 453 | 273 |
| 213 | Prognosis | 5 | 122 | 13 | 32 |
| 214 | Dementia | 7 | 120 | 1254 | 1182 |
| 215 | Adolescent Medicine | 4 | 119 | 650 | 1112 |
| 216 | Phytotherapy | 2 | 118 | 1336 | 879 |
| 217 | Politics | 2 | 116 | 1005 | 379 |
| 217 | government | 2 | 116 | 1094 | 498 |
| 217 | Muscles | 3 | 116 | 1158 | 1184 |
| 220 | Clinical Biochemistry | 2 | 115 | 2127 | 1423 |
| 220 | Pregnancy | 7 | 115 | 603 | 853 |
| 222 | Information Systems | 2 | 113 | 2234 | 1405 |
| 222 | Antiviral agents | 1 | 113 | 757 | 380 |
| 224 | Genomics | 1 | 112 | 6106 | 4097 |
| 224 | Chromosome mapping | 1 | 112 | 3750 | 2550 |
| 224 | gene mapping | 1 | 112 | 4046 | 2867 |
| 227 | Information Science | 5 | 110 | 2343 | 2568 |
| 228 | Palliative Care | 28 | 109 | 191 | 870 |
| 229 | Political Science | 1 | 108 | 3299 | 1253 |
| 229 | Radiobiology | 1 | 108 | 3408 | 1889 |
| 231 | Cytology | 1 | 107 | 7190 | 5417 |
| 232 | Geology | 2 | 105 | 4092 | 2889 |
| 232 | Detectors | 1 | 105 | 2008 | 557 |
| 234 | Melanoma | 1 | 104 | 514 | 311 |
| 234 | city planning | 1 | 104 | 3065 | 1466 |
| 234 | planning | 1 | 104 | 1581 | 569 |
| 237 | rare diseases | 5 | 101 | 629 | 864 |
| 238 | Lipids | 3 | 98 | 1703 | 1903 |
| 239 | Clinical Immunology | 3 | 94 | 1731 | 1703 |
| 240 | Environmental carcinogens | 2 | 92 | 38 | 82 |
| 240 | drugs | 9 | 92 | 1593 | 2713 |
| 242 | Foodborne diseases | 1 | 91 | 630 | 311 |
| 243 | Paleoclimatology | 1 | 88 | 1810 | 1341 |
| 243 | Paleoecology | 1 | 88 | 1754 | 1257 |
| 243 | Paleogeography | 1 | 88 | 1567 | 1166 |
| 243 | human behavior | 3 | 88 | 3066 | 3821 |
| 247 | Adolescent Psychology | 2 | 87 | 1269 | 1008 |
| 247 | Physical fitness | 2 | 87 | 1550 | 1253 |
| 249 | Metabolic diseases | 3 | 86 | 3119 | 3636 |
| 249 | ethanol | 3 | 86 | 628 | 594 |
| 251 | epilepsy | 3 | 85 | 1269 | 1223 |
| 251 | Fisheries Law | 2 | 85 | 242 | 235 |
| 251 | fisheries management | 2 | 85 | 242 | 235 |
| 251 | psychotherapy | 4 | 85 | 1423 | 1608 |
| 255 | Oceanography | 1 | 84 | 3118 | 2132 |
| 255 | Geophysics | 2 | 84 | 4791 | 4055 |
| 255 | Marine Meteorology | 1 | 84 | 656 | 452 |
| 255 | Planets | 2 | 84 | 2122 | 2194 |
| 259 | Oral Medicine | 5 | 83 | 575 | 542 |
| 260 | Neuromuscular diseases | 2 | 81 | 1077 | 968 |
| 261 | Child Development | 2 | 79 | 2916 | 2614 |
| 261 | Professional ethics | 2 | 79 | 429 | 298 |
| 263 | Nanotechnology | 1 | 78 | 7759 | 6043 |
| 264 | Urban Policy | 1 | 77 | 1536 | 1035 |
| 264 | Regional Economics | 1 | 77 | 910 | 478 |
| 264 | epidemiologic methods | 1 | 77 | 437 | 141 |
| 264 | civil service | 3 | 77 | 423 | 388 |
| 268 | Aquatic ecology | 6 | 76 | 796 | 1149 |
| 269 | adolescence | 1 | 75 | 1815 | 1172 |
| 270 | Psychopharmacology | 2 | 74 | 2452 | 2378 |
| 270 | Exercise | 4 | 74 | 1379 | 1422 |
| 272 | Sociology | 2 | 73 | 4577 | 3560 |
| 272 | Neuropharmacology | 1 | 73 | 1262 | 868 |
| 274 | Economic Development | 4 | 72 | 1761 | 2316 |
| 274 | sanitation | 3 | 72 | 1919 | 2817 |
| 274 | Exercise therapy | 2 | 72 | 644 | 380 |
| 274 | Developmental Disabilities | 1 | 72 | 1939 | 1556 |
| 274 | Spain | 3 | 72 | 953 | 268 |
| 279 | Wildlife conservation | 2 | 71 | 1725 | 1902 |
| 279 | Kidney diseases | 5 | 71 | 998 | 1451 |
| 281 | Marriage | 1 | 68 | 1089 | 627 |
| 281 | paraphilias | 1 | 68 | 405 | 272 |
| 281 | Marriage counseling | 1 | 68 | 675 | 454 |
| 284 | Neurochemistry | 3 | 67 | 2906 | 3428 |
| 284 | Maternal health services | 1 | 67 | 1007 | 652 |
| 284 | Child welfare | 1 | 67 | 2335 | 1375 |
| 284 | Electrophysiology | 1 | 67 | 2321 | 1410 |
| 284 | Credit | 1 | 67 | 236 | 184 |
| 284 | Money | 1 | 67 | 681 | 515 |
| 290 | Audiology | 3 | 66 | 999 | 1067 |
| 290 | Hearing | 3 | 66 | 831 | 865 |
| 292 | Biophysics | 7 | 64 | 5208 | 7395 |
| 292 | child abuse | 1 | 64 | 1708 | 1321 |
| 294 | Meteorology | 4 | 63 | 2528 | 3568 |
| 295 | Digestive system diseases | 3 | 61 | 1282 | 1523 |
| 296 | Nursing | 14 | 60 | 924 | 2136 |
| 296 | Dietetics | 1 | 60 | 1829 | 986 |
| 296 | Human Rights | 3 | 60 | 673 | 587 |
| 299 | Pathology | 3 | 59 | 3082 | 3828 |
| 300 | Clinical Psychology | 5 | 58 | 1428 | 2443 |
| 301 | hospice care | 3 | 54 | 736 | 785 |
| 301 | pain management | 4 | 54 | 718 | 1069 |
| 303 | arthritis | 3 | 53 | 1618 | 2393 |
| 304 | Educational Psychology | 1 | 51 | 2566 | 1833 |
| 304 | Respiration | 3 | 51 | 1946 | 2543 |
| 306 | Virology | 3 | 50 | 3925 | 5388 |
| 307 | sports injuries | 1 | 49 | 1212 | 771 |
| 308 | Developmental Biology | 1 | 48 | 3792 | 3609 |
| 308 | Well-being | 1 | 48 | 338 | 201 |
| 308 | Metabolic syndrome | 1 | 48 | 651 | 439 |
| 308 | Earth Sciences | 1 | 48 | 5472 | 4175 |
| 312 | Sustainable Development | 2 | 47 | 3143 | 3309 |
| 312 | Geographic information systems | 1 | 47 | 2254 | 1371 |
| 312 | Neurotransmitters | 1 | 47 | 1213 | 765 |
| 315 | Regional Development | 1 | 46 | 572 | 434 |
| 315 | mental health promotion | 2 | 46 | 246 | 300 |
| 315 | Development planning | 1 | 46 | 524 | 406 |
| 315 | Economic planning | 1 | 46 | 1031 | 799 |
| 319 | Electrical Engineering | 1 | 45 | 5974 | 3286 |
| 319 | Electronics | 1 | 45 | 5990 | 4045 |
| 321 | Anatomy | 2 | 44 | 2996 | 3146 |
| 322 | Marine Biology | 3 | 43 | 3028 | 3803 |
| 322 | General Surgery | 5 | 43 | 710 | 1094 |
| 322 | Mineral resources | 1 | 43 | 1214 | 1094 |
| 325 | Pediatric Nursing | 5 | 42 | 417 | 741 |
| 325 | viruses | 4 | 42 | 1682 | 3049 |
| 325 | Pituitary gland | 1 | 42 | 491 | 444 |
| 325 | Autism | 1 | 42 | 1454 | 1407 |
| 329 | Dentistry | 5 | 41 | 708 | 962 |
| 329 | Mental Health | 6 | 41 | 1421 | 2620 |
| 331 | Industrial Safety | 3 | 40 | 1457 | 1834 |
| 331 | Spectrum analysis | 1 | 40 | 6926 | 6030 |
| 333 | Economic History | 3 | 39 | 4408 | 4056 |
| 333 | Mass Spectrometry | 2 | 39 | 1824 | 2032 |
| 333 | older people | 3 | 39 | 2139 | 2182 |
| 336 | Geriatric Pharmacology | 2 | 38 | 484 | 714 |
| 336 | Elderly | 2 | 38 | 1984 | 1384 |
| 338 | Hydrology | 2 | 37 | 3566 | 3726 |
| 338 | Neurophysiology | 2 | 37 | 4043 | 4944 |
| 338 | local government | 2 | 37 | 474 | 560 |
| 338 | Sports | 2 | 37 | 2952 | 2695 |
| 338 | Great Lakes | 2 | 37 | 371 | 464 |
| 343 | Integrative Medicine | 6 | 36 | 198 | 363 |
| 344 | Otolaryngology | 2 | 35 | 962 | 1100 |
| 344 | Infection control | 2 | 35 | 1141 | 1515 |
| 344 | Program Evaluation | 1 | 35 | 230 | 178 |
| 344 | Sarcopenia | 1 | 35 | 875 | 1087 |
| 344 | landscapes | 1 | 35 | 475 | 340 |
| 344 | Transport | 1 | 35 | 1267 | 1295 |
| 344 | Sea | 1 | 35 | 1142 | 1115 |
| 344 | Fishery resources | 1 | 35 | 1279 | 1220 |
| 344 | health services | 2 | 35 | 1760 | 2042 |
| 344 | evaluation | 1 | 35 | 411 | 257 |
| 354 | Neuroanatomy | 1 | 34 | 587 | 552 |
| 354 | Respiratory system | 2 | 34 | 959 | 1357 |
| 356 | economic policy | 1 | 33 | 4522 | 3027 |
| 356 | economic development projects | 1 | 33 | 489 | 398 |
| 358 | Semantics | 1 | 32 | 523 | 361 |
| 358 | Birds | 9 | 32 | 864 | 1668 |
| 360 | War | 3 | 31 | 235 | 383 |
| 360 | Technology Assessment | 1 | 31 | 845 | 1003 |
| 360 | warfare | 3 | 31 | 319 | 681 |
| 360 | refugees | 3 | 31 | 289 | 462 |
| 364 | Physiology | 3 | 30 | 5260 | 7158 |
| 364 | Paleontology | 1 | 30 | 2240 | 1939 |
| 364 | Mineralogy | 3 | 30 | 1602 | 2149 |
| 364 | Neurotoxicology | 1 | 30 | 1254 | 1464 |
| 364 | Petrology | 3 | 30 | 1031 | 1447 |
| 364 | Health | 2 | 30 | 3702 | 4458 |
| 364 | Biocompatible Materials | 3 | 30 | 4376 | 6451 |
| 364 | acupuncture | 4 | 30 | 218 | 218 |
| 372 | Radiology | 3 | 29 | 2188 | 2632 |
| 372 | Computer-Aided Design | 1 | 29 | 2444 | 2166 |
| 372 | Finite Element Method | 1 | 29 | 622 | 571 |
| 375 | Mathematical Physics | 1 | 28 | 4860 | 3601 |
| 375 | Geochemistry | 2 | 28 | 2719 | 3503 |
| 375 | Lipid metabolism | 1 | 28 | 946 | 1189 |
| 375 | Lipid | 1 | 28 | 951 | 1190 |
| 375 | Statistical physics | 1 | 28 | 5567 | 4900 |
| 380 | Community Psychiatry | 2 | 27 | 1645 | 2286 |
| 380 | Environmental Management | 2 | 27 | 4065 | 5706 |
| 382 | Nephrology | 2 | 26 | 946 | 1486 |
| 382 | Social History | 1 | 26 | 1051 | 597 |
| 382 | Respiratory Infections | 1 | 26 | 862 | 868 |
| 382 | feeding behavior | 1 | 26 | 1552 | 1758 |
| 382 | Appetite | 1 | 26 | 1390 | 1581 |
| 382 | Influenza | 1 | 26 | 709 | 749 |
| 388 | Social Psychology | 1 | 25 | 3894 | 3830 |
| 388 | Aesthetics | 3 | 25 | 247 | 131 |
| 388 | Orthopedic Surgery | 2 | 25 | 1349 | 1792 |
| 388 | Climate change | 1 | 25 | 1970 | 2651 |
| 388 | Research methodology | 1 | 25 | 241 | 298 |
| 388 | Mycology | 1 | 25 | 3021 | 3005 |
| 388 | drug evaluation | 1 | 25 | 2757 | 2874 |
| 395 | Fish diseases | 2 | 24 | 185 | 323 |
| 395 | Aquatic animals | 2 | 24 | 310 | 483 |
| 395 | Invertebrates | 2 | 24 | 951 | 1369 |
| 398 | Restoration Ecology | 4 | 23 | 416 | 1048 |
| 398 | Developmental Immunology | 1 | 23 | 1693 | 1948 |
| 398 | Child psychology | 2 | 23 | 2246 | 3067 |
| 398 | land tenure | 1 | 23 | 170 | 208 |
| 398 | Land reform | 1 | 23 | 178 | 209 |
| 398 | Agriculture | 1 | 23 | 4499 | 4217 |
| 404 | civil rights | 2 | 22 | 586 | 635 |
| 404 | Communication in politics | 1 | 22 | 555 | 403 |
| 404 | Biodiversity | 2 | 22 | 3296 | 4359 |
| 407 | Engineering Ethics | 1 | 21 | 473 | 548 |
| 407 | Bacteriology | 1 | 21 | 3590 | 4304 |
| 407 | Teaching | 3 | 21 | 2113 | 2905 |
| 407 | ethnobiology | 1 | 21 | 566 | 719 |
| 411 | Surface Chemistry | 1 | 20 | 5852 | 6284 |
| 411 | Catalysis | 1 | 20 | 5104 | 5491 |
| 411 | Dental Public Health | 1 | 20 | 402 | 410 |
| 414 | Medical Technology | 3 | 19 | 2411 | 4297 |
| 414 | Economics | 1 | 19 | 6737 | 5776 |
| 414 | Feminist Economics | 1 | 19 | 200 | 326 |
| 414 | Feminism | 1 | 19 | 1152 | 972 |
| 414 | Parkinson's disease | 1 | 19 | 541 | 758 |
| 414 | Psychophysiology | 1 | 19 | 5032 | 5531 |
| 420 | Education | 7 | 18 | 3246 | 5955 |
| 420 | Psychiatric Nursing | 7 | 18 | 446 | 1474 |
| 420 | Drug delivery systems | 1 | 18 | 2888 | 3495 |
| 420 | Drug delivery devices | 1 | 18 | 446 | 732 |
| 424 | Sleep Disorders | 1 | 17 | 3312 | 3307 |
| 424 | X-rays | 1 | 17 | 1522 | 1442 |
| 424 | North America | 5 | 17 | 826 | 2015 |
| 424 | Youth | 1 | 17 | 1316 | 1514 |
| 424 | Sleep | 1 | 17 | 3323 | 3319 |
| 429 | Rheumatology | 3 | 16 | 1636 | 2768 |
| 429 | poverty | 1 | 16 | 1024 | 1260 |
| 429 | healthcare disparities | 1 | 16 | 1200 | 1440 |
| 429 | Ornithology | 7 | 16 | 779 | 1747 |
| 429 | Molecular structure | 1 | 16 | 4429 | 4671 |
| 434 | Transportation Engineering | 2 | 15 | 503 | 900 |
| 434 | Laser therapy | 1 | 15 | 963 | 985 |
| 434 | biological factors | 2 | 15 | 2830 | 4225 |
| 434 | traffic safety | 1 | 15 | 689 | 846 |
| 434 | impact | 1 | 15 | 657 | 906 |
| 439 | Coastal zone management | 3 | 14 | 804 | 1832 |
| 439 | Social Ethics | 1 | 14 | 425 | 355 |
| 439 | Feasibility studies | 1 | 14 | 696 | 661 |
| 439 | Hypertension in pregnancy | 1 | 14 | 697 | 598 |
| 439 | Marine resources | 3 | 14 | 817 | 1844 |
| 439 | Hospitals | 1 | 14 | 1672 | 1928 |
| 445 | Biotechnology | 1 | 13 | 10153 | 11541 |
| 445 | Pharmacy | 3 | 13 | 2719 | 4880 |
| 445 | Food Safety | 1 | 13 | 624 | 846 |
| 445 | emergency management | 1 | 13 | 1923 | 2395 |
| 445 | Leukemia | 1 | 13 | 2346 | 2544 |
| 445 | Pharmacy management | 3 | 13 | 400 | 785 |
| 445 | breastfeeding | 1 | 13 | 1207 | 1557 |
| 452 | Speech-Language Pathology | 1 | 12 | 627 | 827 |
| 452 | Language Disorders | 1 | 12 | 1632 | 1895 |
| 452 | Radiography | 2 | 12 | 1020 | 1734 |
| 452 | ethnicity | 1 | 12 | 1519 | 1544 |
| 452 | speech therapy | 1 | 12 | 829 | 995 |
| 452 | Nationalism | 1 | 12 | 690 | 655 |
| 452 | Sexual health | 1 | 12 | 1644 | 1710 |
| 452 | Smoking | 2 | 12 | 1172 | 2158 |
| 452 | Qualitative Research | 2 | 12 | 712 | 1197 |
| 452 | Speech Disorders | 1 | 12 | 1917 | 2252 |
| 452 | Video Games | 1 | 12 | 218 | 228 |
| 452 | chronic disease | 1 | 12 | 832 | 1165 |
| 452 | educational innovations | 1 | 12 | 1074 | 1232 |
| 452 | Immune system | 1 | 12 | 2145 | 2824 |
| 452 | Immunity | 1 | 12 | 3565 | 4672 |
| 452 | Plants | 3 | 12 | 2558 | 4280 |
| 468 | Criminology | 2 | 11 | 1275 | 1801 |
| 468 | Crime prevention | 1 | 11 | 630 | 610 |
| 468 | Solid State Chemistry | 1 | 11 | 3900 | 4400 |
| 468 | Organometallic chemistry | 1 | 11 | 3301 | 3674 |
| 468 | Bioinorganic chemistry | 1 | 11 | 2514 | 3153 |
| 468 | Personality Disorders | 2 | 11 | 396 | 791 |
| 468 | Safety management | 1 | 11 | 1489 | 1757 |
| 468 | Criminal investigation | 1 | 11 | 467 | 556 |
| 476 | Post-traumatic stress disorder | 2 | 10 | 1146 | 2082 |
| 477 | Biogeography | 1 | 9 | 1749 | 2455 |
| 477 | Criminal psychology | 1 | 9 | 1403 | 1684 |
| 477 | Psychosomatic Medicine | 4 | 9 | 918 | 2444 |
| 477 | History of Medicine | 1 | 9 | 1072 | 741 |
| 477 | Forensic Psychiatry | 1 | 9 | 1125 | 1413 |
| 477 | global environmental change | 1 | 9 | 1721 | 2564 |
| 477 | Osteoporosis | 1 | 9 | 882 | 1365 |
| 477 | Bone diseases | 1 | 9 | 1110 | 1634 |
| 477 | drug abuse | 1 | 9 | 1437 | 1919 |
| 477 | Primates | 1 | 9 | 1446 | 1807 |
| 487 | Healing | 7 | 8 | 35 | 486 |
| 487 | Holistic Health | 7 | 8 | 213 | 1472 |
| 487 | Latin America | 1 | 8 | 2436 | 2170 |
| 490 | Biomedical Engineering | 2 | 7 | 7284 | 10531 |
| 490 | Bioengineering | 2 | 7 | 6239 | 9445 |
| 490 | Rural Development | 1 | 7 | 1261 | 1539 |
| 490 | Manufacturing Processes | 1 | 7 | 3915 | 4730 |
| 490 | Preoperative Care | 1 | 7 | 250 | 402 |
| 490 | Biomechanics | 2 | 7 | 2266 | 3835 |
| 490 | perioperative care | 1 | 7 | 250 | 400 |
| 490 | Water Conservation | 2 | 7 | 133 | 351 |
| 490 | Materials | 1 | 7 | 8893 | 10058 |
| 490 | irrigation | 1 | 7 | 746 | 1029 |
| 490 | drainage | 1 | 7 | 632 | 841 |
| 490 | Adipose tissue | 1 | 7 | 212 | 455 |
| 490 | children | 1 | 7 | 1142 | 1545 |
| 503 | Optics | 1 | 6 | 7550 | 7721 |
| 503 | Photonics | 1 | 6 | 2950 | 3888 |
| 503 | Quantum Chemistry | 1 | 6 | 1717 | 2029 |
| 503 | patient satisfaction | 1 | 6 | 375 | 510 |
| 503 | stem cell transplantation | 1 | 6 | 148 | 194 |
| 503 | Political Participation | 1 | 6 | 625 | 862 |
| 503 | Citizenship | 1 | 6 | 327 | 508 |
| 503 | Stem cells | 1 | 6 | 3034 | 4051 |
| 503 | Groundwater | 1 | 6 | 1373 | 1939 |
| 503 | Light | 1 | 6 | 1979 | 2850 |
| 503 | industrial relations | 1 | 6 | 1600 | 2027 |
| 503 | ecosystem | 1 | 6 | 2546 | 3701 |
| 503 | Aquaculture | 1 | 6 | 2585 | 3391 |
| 516 | Civil Engineering | 3 | 5 | 2137 | 3665 |
| 516 | Dialysis | 1 | 5 | 351 | 402 |
| 516 | Kidney transplantation | 1 | 5 | 196 | 312 |
| 516 | Altitude Sickness | 1 | 5 | 377 | 642 |
| 516 | Health insurance | 3 | 5 | 561 | 1683 |
| 516 | Environmental forensics | 1 | 5 | 212 | 416 |
| 516 | Altitude | 1 | 5 | 377 | 642 |
| 516 | Microscopy | 1 | 5 | 3363 | 4114 |
| 516 | mathematical concepts | 1 | 5 | 893 | 1261 |
| 525 | Climatology | 1 | 4 | 3199 | 4478 |
| 525 | Special Education | 1 | 4 | 1572 | 2011 |
| 525 | Journalism | 1 | 4 | 1036 | 1226 |
| 525 | Hydraulic Engineering | 1 | 4 | 1844 | 2467 |
| 525 | Forest Ecology | 1 | 4 | 1940 | 2861 |
| 525 | Disability Studies | 1 | 4 | 625 | 939 |
| 525 | Herbal medicine | 1 | 4 | 1534 | 2519 |
| 525 | Ocular Motility Disorders | 1 | 4 | 55 | 60 |
| 525 | Learning disabilities | 1 | 4 | 1565 | 2328 |
| 525 | Reproductive toxicology | 1 | 4 | 1104 | 1733 |
| 525 | Forest Management | 1 | 4 | 1907 | 2731 |
| 525 | internet | 1 | 4 | 2476 | 3415 |
| 525 | Multiple sclerosis | 1 | 4 | 1338 | 1854 |
| 538 | Developmental Psychology | 1 | 3 | 1957 | 2964 |
| 538 | Educational Technology | 1 | 3 | 3053 | 4408 |
| 538 | Geopolitics | 1 | 3 | 603 | 938 |
| 538 | Immunopharmacology | 1 | 3 | 2150 | 3200 |
| 538 | Beetles | 1 | 3 | 347 | 412 |
| 538 | cytokines | 1 | 3 | 2646 | 3938 |
| 538 | Asia | 2 | 3 | 4366 | 7353 |
| 538 | Learning | 1 | 3 | 2659 | 3874 |
| 538 | drug development | 1 | 3 | 2340 | 3699 |
| 547 | Medical Physics | 2 | 2 | 2501 | 4129 |
| 547 | air quality management | 1 | 2 | 1240 | 2269 |
| 547 | indoor air pollution | 1 | 2 | 901 | 1698 |
| 547 | Ventilation | 1 | 2 | 1187 | 2056 |
| 547 | Sick building syndrome | 1 | 2 | 901 | 1698 |
| 552 | History | 2 | 1 | 1615 | 1870 |
| 552 | Pediatric Dermatology | 1 | 1 | 1008 | 1594 |
| 552 | World History | 1 | 1 | 364 | 510 |
| 552 | Emergency Nursing | 1 | 1 | 419 | 866 |
| 552 | Vocational Education | 1 | 1 | 1078 | 1780 |
| 552 | Bioethics | 1 | 1 | 1908 | 3004 |
| 552 | Evidence-based practice | 3 | 1 | 143 | 397 |
| 552 | ethnic groups | 1 | 1 | 702 | 1371 |
| 552 | Vocational guidance | 1 | 1 | 1640 | 2657 |
| 552 | Japan | 1 | 1 | 4079 | 5638 |
| 552 | software | 1 | 1 | 2018 | 3376 |
| 552 | Development | 1 | 1 | 1623 | 2686 |
| 552 | Southern states | 1 | 1 | 706 | 1134 |
| 552 | race relations | 1 | 1 | 1080 | 1590 |
| 566 | Anthropology | 1 | 0 | 3275 | 4678 |
| 566 | Occupational Therapy | 1 | 0 | 2340 | 3733 |
| 566 | Mathematics | 1 | 0 | 9290 | 11938 |
| 566 | Energy Policy | 1 | 0 | 4627 | 6768 |
| 566 | Morphology | 1 | 0 | 1649 | 2492 |
| 566 | Hypertension | 1 | 0 | 3111 | 4535 |
| 566 | Art Criticism | 1 | 0 | 226 | 313 |
| 566 | Waste management | 1 | 0 | 2716 | 4334 |
| 566 | Bipolar Disorder | 1 | 0 | 774 | 1352 |
| 566 | Cardiovascular system | 1 | 0 | 3011 | 4453 |
| 566 | Gerontology | 1 | 0 | 3914 | 5598 |
| 566 | Family | 1 | 0 | 1900 | 3265 |
| 566 | families | 1 | 0 | 1684 | 2866 |
| 566 | Physicians | 1 | 0 | 178 | 338 |
| 566 | Visual arts education | 1 | 0 | 47 | 103 |
| 566 | Germany | 1 | 0 | 1605 | 2531 |
| 566 | energy resources | 1 | 0 | 2487 | 3991 |
| 566 | Mollusks | 1 | 0 | 548 | 978 |
| 566 | Egypt | 1 | 0 | 1232 | 2445 |
| 566 | Pancreatic diseases | 2 | 0 | 848 | 1413 |
