| 1 | Medicine | 431 | 135.3K | 866 | 121 |
| 2 | Public Health | 245 | 112.2K | 465 | 23 |
| 3 | Epidemiology | 485 | 80.5K | 99 | 16 |
| 4 | Chronic diseases | 370 | 75.7K | 4 | 2 |
| 5 | Research Design | 118 | 22.0K | 52 | 17 |
| 6 | Research | 200 | 11.7K | 1224 | 770 |
| 7 | Science | 186 | 11.0K | 1670 | 1911 |
| 8 | United States | 27 | 6.9K | 2133 | 401 |
| 9 | finance | 2 | 5.8K | 3082 | 97 |
| 10 | Health Services Research | 125 | 5.5K | 105 | 81 |
| 11 | Health Policy | 112 | 4.3K | 215 | 153 |
| 12 | Oncology | 19 | 4.2K | 1053 | 561 |
| 13 | Surgery | 18 | 2.6K | 1141 | 692 |
| 14 | Vaccines | 85 | 2.5K | 210 | 241 |
| 15 | Psychiatry | 63 | 2.5K | 1206 | 1188 |
| 16 | Nutrition | 44 | 2.5K | 1352 | 960 |
| 17 | Environmental Health | 39 | 2.4K | 1767 | 1304 |
| 18 | Mental Disorders | 42 | 2.4K | 899 | 778 |
| 19 | Health Education | 40 | 2.2K | 453 | 243 |
| 20 | Physical Therapy | 5 | 2.2K | 1274 | 214 |
| 21 | counseling | 30 | 2.2K | 375 | 148 |
| 22 | Patient education | 29 | 2.2K | 127 | 55 |
| 23 | Environment | 27 | 2.0K | 2093 | 1888 |
| 24 | Ecology | 28 | 2.0K | 2828 | 2170 |
| 25 | Primary health care | 50 | 1.9K | 301 | 190 |
| 26 | pain | 27 | 1.8K | 462 | 342 |
| 27 | Metabolism | 25 | 1.8K | 1354 | 1084 |
| 28 | Pediatrics | 37 | 1.7K | 853 | 803 |
| 29 | Statistics | 18 | 1.7K | 1347 | 485 |
| 29 | Biometrics | 18 | 1.7K | 466 | 176 |
| 31 | alcoholism | 11 | 1.7K | 924 | 327 |
| 32 | Obesity | 25 | 1.6K | 826 | 587 |
| 33 | drug addiction | 7 | 1.6K | 924 | 272 |
| 34 | scholarly publishing | 6 | 1.5K | 68 | 1 |
| 35 | peer review | 5 | 1.5K | 59 | 1 |
| 36 | Environmental Policy | 21 | 1.5K | 1293 | 992 |
| 37 | Environmental monitoring | 20 | 1.5K | 1803 | 1170 |
| 38 | environmental protection | 19 | 1.5K | 1533 | 873 |
| 39 | Randomized Controlled Trials | 56 | 1.5K | 126 | 77 |
| 40 | Environmental Engineering | 19 | 1.4K | 1777 | 1119 |
| 40 | Environmental Law | 18 | 1.4K | 372 | 315 |
| 42 | Diet | 22 | 1.4K | 886 | 727 |
| 43 | Decision making | 30 | 1.4K | 319 | 248 |
| 44 | Biology | 23 | 1.3K | 5513 | 5269 |
| 45 | Hematology | 33 | 1.3K | 1643 | 1311 |
| 46 | Psychology | 20 | 1.2K | 2492 | 1508 |
| 47 | Obstetrics | 26 | 1.2K | 1100 | 728 |
| 48 | fertility | 20 | 1.2K | 517 | 377 |
| 49 | Infertility | 16 | 1.2K | 598 | 363 |
| 50 | Molecular Biology | 14 | 1.1K | 5423 | 4030 |
| 51 | Diabetes | 28 | 1.1K | 905 | 1078 |
| 52 | Biochemistry | 14 | 1.0K | 6115 | 4230 |
| 53 | Reproduction | 19 | 959 | 1174 | 816 |
| 54 | Transplantation | 8 | 919 | 1016 | 584 |
| 55 | Cardiovascular diseases | 9 | 831 | 1173 | 530 |
| 56 | health planning | 22 | 830 | 723 | 415 |
| 57 | Cancer | 17 | 764 | 2189 | 2075 |
| 58 | Immunotherapy | 38 | 760 | 448 | 998 |
| 59 | Pharmaceutical Chemistry | 7 | 737 | 3445 | 1940 |
| 59 | Alternative Medicine | 46 | 737 | 264 | 401 |
| 59 | complementary therapies | 46 | 737 | 284 | 410 |
| 62 | Child | 20 | 721 | 1155 | 866 |
| 63 | Clinical Chemistry | 6 | 713 | 2859 | 1440 |
| 64 | Geriatrics | 24 | 705 | 1287 | 1182 |
| 65 | Adolescent | 18 | 704 | 964 | 697 |
| 66 | Quality of life | 15 | 686 | 605 | 531 |
| 67 | Embryology | 6 | 666 | 1456 | 966 |
| 68 | Reproductive health | 7 | 664 | 552 | 207 |
| 69 | Microbiology | 11 | 659 | 4864 | 4121 |
| 70 | Medical Microbiology | 10 | 657 | 1702 | 1443 |
| 71 | rehabilitation | 13 | 639 | 1234 | 846 |
| 72 | Liver diseases | 10 | 632 | 1076 | 1078 |
| 73 | Europe | 32 | 613 | 1109 | 1139 |
| 74 | Zoology | 8 | 601 | 2077 | 932 |
| 74 | United Kingdom | 23 | 601 | 607 | 834 |
| 76 | infection | 12 | 596 | 1003 | 870 |
| 77 | drug therapy | 24 | 587 | 1055 | 1239 |
| 78 | Contraception | 7 | 574 | 412 | 183 |
| 78 | risk factors | 4 | 574 | 799 | 274 |
| 80 | Pollution | 17 | 568 | 3038 | 3407 |
| 81 | Long-Term Care | 8 | 560 | 352 | 259 |
| 81 | Long-term care facilities | 8 | 560 | 346 | 259 |
| 83 | Toxicology | 19 | 549 | 2582 | 2708 |
| 84 | Birth control | 4 | 545 | 431 | 141 |
| 85 | Pharmacology | 26 | 542 | 2605 | 3220 |
| 86 | Genetics | 7 | 536 | 3645 | 2903 |
| 87 | Mental Health Services | 5 | 535 | 1236 | 414 |
| 88 | Allergy | 9 | 524 | 959 | 1046 |
| 89 | preventive medicine | 12 | 522 | 746 | 683 |
| 90 | Fisheries | 18 | 512 | 768 | 746 |
| 91 | Dermatology | 13 | 508 | 1125 | 887 |
| 92 | Enteral nutrition | 5 | 504 | 891 | 466 |
| 92 | Parenteral nutrition | 5 | 504 | 1092 | 598 |
| 94 | industrial hygiene | 8 | 481 | 733 | 201 |
| 95 | Neurology | 22 | 479 | 2889 | 3653 |
| 96 | environmental pollution | 16 | 477 | 2481 | 2833 |
| 97 | Emergency Medicine | 28 | 473 | 527 | 590 |
| 98 | Therapeutics | 6 | 455 | 1672 | 1216 |
| 99 | Visual Perception | 1 | 453 | 3728 | 967 |
| 99 | Memory | 1 | 453 | 3934 | 1122 |
| 99 | Attention | 1 | 453 | 3889 | 1015 |
| 99 | Perception | 1 | 453 | 3986 | 1097 |
| 103 | Immunology | 7 | 438 | 3430 | 2853 |
| 104 | Global Health | 12 | 432 | 495 | 272 |
| 105 | Environmental pollutants | 13 | 429 | 1215 | 1252 |
| 106 | Substance Abuse | 4 | 427 | 1598 | 689 |
| 107 | Emergency Medical Services | 23 | 414 | 166 | 186 |
| 107 | Vaccination | 10 | 414 | 75 | 66 |
| 109 | Nutrition physiology | 5 | 406 | 666 | 367 |
| 110 | Aging | 11 | 402 | 2019 | 1653 |
| 111 | Infections | 7 | 398 | 956 | 913 |
| 111 | Parasitic Diseases | 7 | 398 | 1763 | 1261 |
| 113 | Schizophrenia | 24 | 396 | 404 | 738 |
| 114 | blood transfusion | 2 | 379 | 1294 | 344 |
| 115 | Health promotion | 14 | 378 | 733 | 784 |
| 116 | Environmental Chemistry | 11 | 374 | 1253 | 1517 |
| 116 | pollutants | 11 | 374 | 1081 | 1167 |
| 118 | Tropical Medicine | 11 | 368 | 1157 | 796 |
| 119 | Women's health | 9 | 366 | 831 | 555 |
| 120 | Geriatric Oncology | 9 | 365 | 315 | 319 |
| 121 | Physics | 5 | 354 | 9348 | 8196 |
| 122 | Evidence-Based Medicine | 29 | 345 | 237 | 423 |
| 123 | Clinical Trials | 7 | 343 | 389 | 226 |
| 124 | Geriatric Psychiatry | 5 | 339 | 1037 | 642 |
| 125 | disease outbreaks | 3 | 337 | 700 | 333 |
| 125 | Epidemics | 3 | 337 | 672 | 327 |
| 127 | Critical Care | 6 | 331 | 1575 | 1563 |
| 128 | Diabetes mellitus | 16 | 330 | 1194 | 1911 |
| 129 | Critical Care Medicine | 6 | 323 | 1466 | 1557 |
| 130 | Geography | 2 | 321 | 3333 | 1271 |
| 131 | Clinical Pharmacology | 13 | 316 | 850 | 900 |
| 132 | Oxidative stress | 1 | 315 | 2308 | 847 |
| 132 | free radicals | 1 | 315 | 2758 | 1225 |
| 132 | Oxidation-reduction | 1 | 315 | 1609 | 796 |
| 135 | Human Geography | 1 | 312 | 2098 | 504 |
| 136 | China | 10 | 310 | 1867 | 1426 |
| 137 | Ophthalmology | 10 | 304 | 1267 | 1225 |
| 138 | Sports Medicine | 14 | 295 | 1488 | 1443 |
| 139 | animals | 3 | 292 | 1586 | 522 |
| 139 | medical education | 20 | 292 | 764 | 981 |
| 141 | Genetic epidemiology | 1 | 291 | 668 | 177 |
| 141 | heredity | 1 | 291 | 1521 | 323 |
| 143 | Conservation Biology | 2 | 253 | 1743 | 921 |
| 144 | Natural history | 6 | 251 | 4021 | 5850 |
| 145 | Wildlife management | 7 | 248 | 433 | 274 |
| 146 | preimplantation genetic diagnosis | 6 | 245 | 351 | 226 |
| 146 | embryo transfer | 6 | 245 | 373 | 238 |
| 146 | System analysis | 6 | 245 | 2128 | 1424 |
| 149 | Engineering | 5 | 242 | 4527 | 2426 |
| 150 | occupational diseases | 8 | 237 | 638 | 657 |
| 151 | Food Microbiology | 3 | 236 | 1547 | 1150 |
| 152 | Chemistry | 10 | 234 | 7470 | 8385 |
| 153 | Library Science | 6 | 227 | 1002 | 279 |
| 154 | Nuclear Medicine | 2 | 226 | 1677 | 832 |
| 154 | Diagnostic Imaging | 2 | 226 | 3233 | 1522 |
| 154 | Molecular Imaging | 2 | 226 | 1063 | 659 |
| 157 | Regional Planning | 3 | 224 | 1829 | 938 |
| 158 | India | 10 | 223 | 967 | 373 |
| 159 | Urology | 11 | 220 | 1379 | 1654 |
| 160 | Alzheimer's disease | 9 | 209 | 1113 | 962 |
| 161 | Ethics | 6 | 206 | 764 | 423 |
| 162 | Brain | 3 | 204 | 3249 | 2445 |
| 163 | Orthopedics | 9 | 203 | 1193 | 1332 |
| 164 | Travel | 6 | 200 | 689 | 436 |
| 165 | Endocrinology | 10 | 199 | 2403 | 3243 |
| 165 | Cell Biology | 7 | 199 | 3702 | 4422 |
| 167 | Bacterial infections | 5 | 198 | 864 | 1064 |
| 168 | Neurosurgery | 7 | 197 | 979 | 1029 |
| 168 | environmental exposure | 7 | 197 | 1471 | 1618 |
| 170 | Occupational Health | 7 | 196 | 870 | 663 |
| 171 | Mental illness | 7 | 193 | 1760 | 2166 |
| 172 | Animal ecology | 2 | 189 | 1689 | 915 |
| 173 | Globalization | 1 | 188 | 1244 | 321 |
| 173 | international cooperation | 1 | 188 | 1332 | 421 |
| 175 | Nutritional support | 1 | 185 | 411 | 182 |
| 176 | Spine | 3 | 184 | 927 | 770 |
| 177 | Fishery management | 12 | 183 | 434 | 561 |
| 178 | Nervous system | 5 | 179 | 2554 | 2691 |
| 179 | Human genetics | 1 | 178 | 4070 | 3817 |
| 180 | Food | 4 | 175 | 3414 | 2848 |
| 181 | Tourism | 2 | 173 | 2162 | 1361 |
| 182 | Environmental Toxicology | 3 | 172 | 3012 | 2571 |
| 182 | disabilities | 5 | 172 | 647 | 539 |
| 184 | Behavior | 6 | 170 | 2932 | 3439 |
| 185 | Chemotherapy | 8 | 169 | 1165 | 1432 |
| 186 | Medical Ethics | 11 | 164 | 604 | 660 |
| 187 | Transportation | 8 | 163 | 1149 | 1303 |
| 187 | community participation | 7 | 163 | 56 | 59 |
| 187 | Faculty | 7 | 163 | 56 | 59 |
| 187 | Africa | 20 | 163 | 541 | 804 |
| 191 | Medical Oncology | 3 | 160 | 2669 | 2035 |
| 191 | Carcinogenesis | 8 | 160 | 708 | 1164 |
| 193 | Public Policy | 6 | 157 | 1496 | 1582 |
| 194 | Australia | 5 | 156 | 1858 | 1327 |
| 195 | Social Sciences | 4 | 147 | 4056 | 2300 |
| 195 | health services accessibility | 10 | 147 | 501 | 757 |
| 197 | food technology | 2 | 146 | 3566 | 2490 |
| 198 | Autoimmunity | 1 | 138 | 1536 | 991 |
| 199 | Social work | 3 | 137 | 1820 | 931 |
| 200 | Developing countries | 9 | 136 | 1577 | 2096 |
| 201 | Systems Analysis | 4 | 134 | 1115 | 820 |
| 201 | Socioeconomic Factors | 6 | 134 | 553 | 696 |
| 201 | Roads | 7 | 134 | 554 | 483 |
| 204 | Industrial Engineering | 1 | 131 | 3503 | 1670 |
| 204 | Thrombosis | 6 | 131 | 1030 | 1255 |
| 206 | Hemostasis | 5 | 129 | 783 | 748 |
| 207 | Risk Management | 18 | 128 | 188 | 633 |
| 207 | Health Risk Assessment | 18 | 128 | 61 | 280 |
| 207 | Jurisprudence | 18 | 128 | 364 | 694 |
| 210 | Public Administration | 7 | 124 | 1051 | 939 |
| 211 | Freshwater invertebrates | 1 | 122 | 453 | 273 |
| 212 | Malaria | 3 | 121 | 936 | 765 |
| 213 | Adolescent Medicine | 4 | 119 | 650 | 1083 |
| 213 | Dementia | 7 | 119 | 1253 | 1168 |
| 215 | Clinical Biochemistry | 2 | 115 | 2127 | 1415 |
| 215 | Phytotherapy | 2 | 115 | 1336 | 887 |
| 215 | Muscles | 3 | 115 | 1158 | 1171 |
| 218 | Prognosis | 5 | 113 | 13 | 33 |
| 219 | Antiviral agents | 1 | 112 | 757 | 382 |
| 220 | Information Systems | 2 | 111 | 2234 | 1403 |
| 220 | Politics | 2 | 111 | 1005 | 384 |
| 220 | government | 2 | 111 | 1094 | 504 |
| 220 | Pregnancy | 7 | 111 | 603 | 856 |
| 224 | Genomics | 1 | 110 | 6106 | 4089 |
| 224 | Chromosome mapping | 1 | 110 | 3750 | 2546 |
| 224 | gene mapping | 1 | 110 | 4046 | 2867 |
| 227 | Political Science | 1 | 107 | 3299 | 1242 |
| 227 | Cytology | 1 | 107 | 7186 | 5375 |
| 227 | Information Science | 5 | 107 | 2343 | 2567 |
| 230 | Palliative Care | 28 | 105 | 191 | 879 |
| 230 | Radiobiology | 1 | 105 | 3340 | 1848 |
| 230 | Detectors | 1 | 105 | 2008 | 530 |
| 233 | Geology | 2 | 104 | 4092 | 2877 |
| 234 | Melanoma | 1 | 103 | 514 | 308 |
| 235 | city planning | 1 | 101 | 3065 | 1463 |
| 235 | planning | 1 | 101 | 1581 | 567 |
| 237 | rare diseases | 5 | 99 | 629 | 863 |
| 238 | Lipids | 3 | 98 | 1693 | 1880 |
| 239 | Clinical Immunology | 3 | 91 | 1725 | 1709 |
| 239 | Environmental carcinogens | 2 | 91 | 38 | 82 |
| 241 | Foodborne diseases | 1 | 90 | 630 | 310 |
| 241 | drugs | 9 | 90 | 1593 | 2714 |
| 243 | Paleoclimatology | 1 | 88 | 1810 | 1339 |
| 243 | Paleoecology | 1 | 88 | 1754 | 1252 |
| 243 | Paleogeography | 1 | 88 | 1567 | 1161 |
| 246 | Adolescent Psychology | 2 | 87 | 1269 | 997 |
| 247 | human behavior | 3 | 86 | 3066 | 3814 |
| 248 | Fisheries Law | 2 | 85 | 242 | 233 |
| 248 | fisheries management | 2 | 85 | 242 | 233 |
| 248 | psychotherapy | 4 | 85 | 1423 | 1595 |
| 248 | ethanol | 3 | 85 | 628 | 595 |
| 252 | Oceanography | 1 | 84 | 3118 | 2121 |
| 252 | Geophysics | 2 | 84 | 4791 | 4016 |
| 252 | Marine Meteorology | 1 | 84 | 656 | 449 |
| 252 | epilepsy | 3 | 84 | 1266 | 1203 |
| 252 | Planets | 2 | 84 | 2122 | 2179 |
| 257 | Physical fitness | 2 | 81 | 1550 | 1282 |
| 258 | Oral Medicine | 5 | 80 | 575 | 535 |
| 258 | Neuromuscular diseases | 2 | 80 | 1077 | 968 |
| 260 | Professional ethics | 2 | 78 | 429 | 296 |
| 261 | Nanotechnology | 1 | 77 | 7746 | 6011 |
| 261 | Urban Policy | 1 | 77 | 1536 | 1019 |
| 261 | Regional Economics | 1 | 77 | 910 | 475 |
| 261 | epidemiologic methods | 1 | 77 | 437 | 140 |
| 261 | Metabolic diseases | 3 | 77 | 3119 | 3738 |
| 261 | civil service | 3 | 77 | 423 | 383 |
| 267 | Child Development | 2 | 76 | 2903 | 2615 |
| 268 | adolescence | 1 | 75 | 1815 | 1162 |
| 269 | Psychopharmacology | 2 | 74 | 2428 | 2333 |
| 270 | Sociology | 2 | 73 | 4577 | 3509 |
| 270 | Neuropharmacology | 1 | 73 | 1262 | 853 |
| 272 | Exercise | 4 | 72 | 1379 | 1425 |
| 273 | sanitation | 3 | 71 | 1919 | 2800 |
| 273 | Exercise therapy | 2 | 71 | 636 | 373 |
| 273 | Spain | 3 | 71 | 953 | 269 |
| 276 | Wildlife conservation | 2 | 70 | 1724 | 1891 |
| 276 | Developmental Disabilities | 1 | 70 | 1939 | 1558 |
| 278 | Kidney diseases | 5 | 69 | 998 | 1453 |
| 279 | Economic Development | 4 | 68 | 1761 | 2336 |
| 279 | Marriage | 1 | 68 | 1089 | 621 |
| 279 | paraphilias | 1 | 68 | 405 | 270 |
| 279 | Marriage counseling | 1 | 68 | 675 | 452 |
| 279 | Aquatic ecology | 6 | 68 | 796 | 1197 |
| 284 | Maternal health services | 1 | 67 | 1007 | 648 |
| 284 | Child welfare | 1 | 67 | 2335 | 1366 |
| 284 | Electrophysiology | 1 | 67 | 2321 | 1402 |
| 284 | Credit | 1 | 67 | 236 | 184 |
| 284 | Money | 1 | 67 | 681 | 511 |
| 289 | Audiology | 3 | 66 | 999 | 1057 |
| 289 | Hearing | 3 | 66 | 831 | 856 |
| 291 | Neurochemistry | 3 | 65 | 2899 | 3436 |
| 292 | Meteorology | 4 | 63 | 2528 | 3540 |
| 292 | child abuse | 1 | 63 | 1708 | 1325 |
| 294 | Biophysics | 7 | 62 | 5194 | 7387 |
| 295 | Digestive system diseases | 3 | 61 | 1282 | 1519 |
| 296 | Dietetics | 1 | 60 | 1693 | 928 |
| 297 | Pathology | 3 | 59 | 3074 | 3773 |
| 298 | Nursing | 14 | 58 | 924 | 2136 |
| 298 | Clinical Psychology | 5 | 58 | 1428 | 2426 |
| 298 | Human Rights | 3 | 58 | 673 | 592 |
| 301 | pain management | 4 | 54 | 718 | 1058 |
| 302 | arthritis | 3 | 53 | 1618 | 2375 |
| 303 | hospice care | 3 | 52 | 736 | 791 |
| 304 | Educational Psychology | 1 | 51 | 2566 | 1811 |
| 305 | Virology | 3 | 50 | 3916 | 5350 |
| 305 | Respiration | 3 | 50 | 1943 | 2531 |
| 307 | Metabolic syndrome | 1 | 48 | 651 | 429 |
| 307 | sports injuries | 1 | 48 | 1212 | 757 |
| 309 | Geographic information systems | 1 | 47 | 2254 | 1353 |
| 309 | Well-being | 1 | 47 | 338 | 196 |
| 311 | Regional Development | 1 | 46 | 572 | 432 |
| 311 | mental health promotion | 2 | 46 | 246 | 292 |
| 311 | Development planning | 1 | 46 | 524 | 405 |
| 311 | Economic planning | 1 | 46 | 1031 | 789 |
| 315 | Sustainable Development | 2 | 45 | 3141 | 3300 |
| 315 | Neurotransmitters | 1 | 45 | 1199 | 762 |
| 317 | Anatomy | 2 | 44 | 2996 | 3129 |
| 318 | Marine Biology | 3 | 43 | 3028 | 3775 |
| 318 | General Surgery | 5 | 43 | 710 | 1091 |
| 318 | Mineral resources | 1 | 43 | 1214 | 1079 |
| 318 | Earth Sciences | 1 | 43 | 5472 | 4275 |
| 322 | Pituitary gland | 1 | 42 | 491 | 441 |
| 322 | Autism | 1 | 42 | 1454 | 1386 |
| 324 | Electrical Engineering | 1 | 41 | 5974 | 3374 |
| 324 | Electronics | 1 | 41 | 5938 | 4092 |
| 324 | Pediatric Nursing | 5 | 41 | 382 | 677 |
| 327 | Industrial Safety | 3 | 40 | 1457 | 1810 |
| 327 | Mental Health | 6 | 40 | 1421 | 2626 |
| 327 | Spectrum analysis | 1 | 40 | 6887 | 5937 |
| 330 | Developmental Biology | 1 | 39 | 3792 | 3772 |
| 330 | older people | 3 | 39 | 2139 | 2151 |
| 330 | viruses | 4 | 39 | 1682 | 3092 |
| 333 | Geriatric Pharmacology | 2 | 38 | 484 | 707 |
| 333 | Mass Spectrometry | 2 | 38 | 1824 | 2035 |
| 333 | Elderly | 2 | 38 | 1984 | 1370 |
| 336 | Dentistry | 5 | 37 | 693 | 976 |
| 336 | Hydrology | 2 | 37 | 3566 | 3698 |
| 336 | local government | 2 | 37 | 474 | 552 |
| 336 | Sports | 2 | 37 | 2952 | 2671 |
| 336 | Great Lakes | 2 | 37 | 371 | 461 |
| 341 | Neurophysiology | 2 | 36 | 4037 | 4950 |
| 341 | Integrative Medicine | 6 | 36 | 198 | 359 |
| 343 | Otolaryngology | 2 | 35 | 962 | 1092 |
| 343 | Economic History | 3 | 35 | 4408 | 4173 |
| 343 | Infection control | 2 | 35 | 1141 | 1498 |
| 343 | Program Evaluation | 1 | 35 | 230 | 178 |
| 343 | Sarcopenia | 1 | 35 | 875 | 1051 |
| 343 | Transport | 1 | 35 | 1267 | 1277 |
| 343 | Sea | 1 | 35 | 1142 | 1101 |
| 343 | Fishery resources | 1 | 35 | 1279 | 1207 |
| 343 | health services | 2 | 35 | 1760 | 2029 |
| 343 | evaluation | 1 | 35 | 411 | 254 |
| 353 | landscapes | 1 | 34 | 475 | 339 |
| 354 | Neuroanatomy | 1 | 33 | 587 | 556 |
| 354 | economic policy | 1 | 33 | 4522 | 2985 |
| 354 | Respiratory system | 2 | 33 | 959 | 1350 |
| 354 | economic development projects | 1 | 33 | 489 | 397 |
| 358 | Semantics | 1 | 32 | 523 | 359 |
| 359 | Mineralogy | 3 | 30 | 1602 | 2135 |
| 359 | Neurotoxicology | 1 | 30 | 1254 | 1459 |
| 359 | Petrology | 3 | 30 | 1031 | 1440 |
| 359 | Technology Assessment | 1 | 30 | 845 | 995 |
| 359 | Birds | 9 | 30 | 864 | 1693 |
| 364 | Radiology | 3 | 29 | 2185 | 2610 |
| 364 | Paleontology | 1 | 29 | 2239 | 1945 |
| 364 | Health | 2 | 29 | 3702 | 4468 |
| 364 | Biocompatible Materials | 3 | 29 | 4373 | 6448 |
| 368 | Geochemistry | 2 | 28 | 2719 | 3478 |
| 368 | War | 3 | 28 | 235 | 401 |
| 368 | Computer-Aided Design | 1 | 28 | 2444 | 2171 |
| 368 | Lipid metabolism | 1 | 28 | 946 | 1178 |
| 368 | acupuncture | 4 | 28 | 218 | 224 |
| 368 | warfare | 3 | 28 | 319 | 698 |
| 368 | Finite Element Method | 1 | 28 | 622 | 575 |
| 368 | refugees | 3 | 28 | 289 | 482 |
| 368 | Lipid | 1 | 28 | 951 | 1179 |
| 377 | Physiology | 3 | 27 | 5260 | 7294 |
| 377 | Mathematical Physics | 1 | 27 | 4846 | 3591 |
| 377 | Environmental Management | 2 | 27 | 4065 | 5636 |
| 377 | Statistical physics | 1 | 27 | 5564 | 4908 |
| 381 | Community Psychiatry | 2 | 26 | 1645 | 2296 |
| 381 | Respiratory Infections | 1 | 26 | 862 | 859 |
| 381 | feeding behavior | 1 | 26 | 1552 | 1744 |
| 381 | Appetite | 1 | 26 | 1390 | 1568 |
| 381 | Influenza | 1 | 26 | 709 | 739 |
| 386 | Social Psychology | 1 | 25 | 3894 | 3807 |
| 386 | Aesthetics | 3 | 25 | 247 | 131 |
| 386 | Orthopedic Surgery | 2 | 25 | 1349 | 1774 |
| 386 | Research methodology | 1 | 25 | 241 | 295 |
| 390 | Nephrology | 2 | 24 | 946 | 1504 |
| 390 | Climate change | 1 | 24 | 1970 | 2650 |
| 390 | Mycology | 1 | 24 | 3021 | 3015 |
| 390 | Fish diseases | 2 | 24 | 185 | 322 |
| 390 | Aquatic animals | 2 | 24 | 310 | 482 |
| 390 | Invertebrates | 2 | 24 | 951 | 1365 |
| 390 | drug evaluation | 1 | 24 | 2757 | 2893 |
| 397 | Restoration Ecology | 4 | 23 | 416 | 1032 |
| 397 | Developmental Immunology | 1 | 23 | 1693 | 1935 |
| 397 | Child psychology | 2 | 23 | 2246 | 3048 |
| 400 | Engineering Ethics | 1 | 21 | 473 | 546 |
| 400 | civil rights | 2 | 21 | 586 | 639 |
| 400 | Bacteriology | 1 | 21 | 3590 | 4292 |
| 400 | Teaching | 3 | 21 | 2113 | 2869 |
| 400 | Biodiversity | 2 | 21 | 3296 | 4361 |
| 405 | Surface Chemistry | 1 | 20 | 5852 | 6253 |
| 405 | Catalysis | 1 | 20 | 5104 | 5460 |
| 405 | ethnobiology | 1 | 20 | 566 | 722 |
| 405 | land tenure | 1 | 20 | 170 | 224 |
| 405 | Land reform | 1 | 20 | 178 | 226 |
| 405 | Communication in politics | 1 | 20 | 555 | 408 |
| 405 | Agriculture | 1 | 20 | 4497 | 4325 |
| 412 | Economics | 1 | 19 | 6737 | 5728 |
| 412 | Dental Public Health | 1 | 19 | 402 | 414 |
| 412 | Feminist Economics | 1 | 19 | 200 | 326 |
| 412 | Feminism | 1 | 19 | 1152 | 965 |
| 412 | Parkinson's disease | 1 | 19 | 541 | 732 |
| 417 | Psychiatric Nursing | 7 | 18 | 446 | 1458 |
| 417 | Psychophysiology | 1 | 18 | 5009 | 5542 |
| 419 | Education | 7 | 17 | 3243 | 5984 |
| 419 | Sleep Disorders | 1 | 17 | 3312 | 3287 |
| 419 | X-rays | 1 | 17 | 1522 | 1427 |
| 419 | Sleep | 1 | 17 | 3323 | 3297 |
| 423 | Medical Technology | 3 | 16 | 2411 | 4489 |
| 424 | Transportation Engineering | 2 | 15 | 503 | 892 |
| 424 | poverty | 1 | 15 | 1024 | 1289 |
| 424 | healthcare disparities | 1 | 15 | 1200 | 1455 |
| 424 | Drug delivery systems | 1 | 15 | 2888 | 3570 |
| 424 | Ornithology | 7 | 15 | 779 | 1758 |
| 424 | Drug delivery devices | 1 | 15 | 446 | 759 |
| 424 | North America | 5 | 15 | 826 | 2085 |
| 424 | Youth | 1 | 15 | 1316 | 1560 |
| 424 | Molecular structure | 1 | 15 | 4429 | 4691 |
| 424 | traffic safety | 1 | 15 | 689 | 833 |
| 424 | impact | 1 | 15 | 657 | 901 |
| 435 | Rheumatology | 3 | 14 | 1636 | 2833 |
| 435 | Social Ethics | 1 | 14 | 425 | 352 |
| 435 | Laser therapy | 1 | 14 | 963 | 984 |
| 435 | Hypertension in pregnancy | 1 | 14 | 697 | 592 |
| 435 | Hospitals | 1 | 14 | 1672 | 1911 |
| 435 | biological factors | 2 | 14 | 2830 | 4268 |
| 441 | Biotechnology | 1 | 13 | 10151 | 11489 |
| 441 | Pharmacy | 3 | 13 | 2686 | 4780 |
| 441 | Food Safety | 1 | 13 | 624 | 826 |
| 441 | Coastal zone management | 3 | 13 | 804 | 1845 |
| 441 | emergency management | 1 | 13 | 1921 | 2373 |
| 441 | Feasibility studies | 1 | 13 | 696 | 681 |
| 441 | Leukemia | 1 | 13 | 2329 | 2535 |
| 441 | Pharmacy management | 3 | 13 | 400 | 775 |
| 441 | breastfeeding | 1 | 13 | 1207 | 1544 |
| 441 | Marine resources | 3 | 13 | 817 | 1854 |
| 451 | Speech-Language Pathology | 1 | 12 | 627 | 812 |
| 451 | Language Disorders | 1 | 12 | 1632 | 1881 |
| 451 | Radiography | 2 | 12 | 1016 | 1706 |
| 451 | Social History | 1 | 12 | 1051 | 808 |
| 451 | speech therapy | 1 | 12 | 829 | 981 |
| 451 | Sexual health | 1 | 12 | 1644 | 1699 |
| 451 | Smoking | 2 | 12 | 1172 | 2148 |
| 451 | Qualitative Research | 2 | 12 | 712 | 1181 |
| 451 | Speech Disorders | 1 | 12 | 1917 | 2236 |
| 451 | Video Games | 1 | 12 | 218 | 227 |
| 451 | educational innovations | 1 | 12 | 1074 | 1216 |
| 451 | Immune system | 1 | 12 | 2145 | 2812 |
| 451 | Immunity | 1 | 12 | 3563 | 4647 |
| 464 | Criminology | 2 | 11 | 1275 | 1782 |
| 464 | Crime prevention | 1 | 11 | 630 | 604 |
| 464 | Solid State Chemistry | 1 | 11 | 3880 | 4371 |
| 464 | Organometallic chemistry | 1 | 11 | 3301 | 3625 |
| 464 | Bioinorganic chemistry | 1 | 11 | 2514 | 3143 |
| 464 | Personality Disorders | 2 | 11 | 396 | 788 |
| 464 | Safety management | 1 | 11 | 1489 | 1735 |
| 464 | Criminal investigation | 1 | 11 | 467 | 551 |
| 472 | ethnicity | 1 | 10 | 1519 | 1624 |
| 472 | Nationalism | 1 | 10 | 690 | 692 |
| 472 | chronic disease | 1 | 10 | 832 | 1202 |
| 472 | Plants | 3 | 10 | 2557 | 4389 |
| 476 | Biogeography | 1 | 9 | 1749 | 2451 |
| 476 | Criminal psychology | 1 | 9 | 1403 | 1676 |
| 476 | Psychosomatic Medicine | 4 | 9 | 918 | 2419 |
| 476 | Forensic Psychiatry | 1 | 9 | 1125 | 1407 |
| 476 | global environmental change | 1 | 9 | 1715 | 2541 |
| 476 | Osteoporosis | 1 | 9 | 882 | 1348 |
| 476 | Bone diseases | 1 | 9 | 1110 | 1621 |
| 476 | Post-traumatic stress disorder | 2 | 9 | 1146 | 2098 |
| 476 | drug abuse | 1 | 9 | 1437 | 1900 |
| 476 | Primates | 1 | 9 | 1446 | 1800 |
| 486 | History of Medicine | 1 | 8 | 1072 | 772 |
| 486 | Healing | 7 | 8 | 35 | 475 |
| 486 | Holistic Health | 7 | 8 | 213 | 1456 |
| 486 | Latin America | 1 | 8 | 2436 | 2155 |
| 490 | Biomedical Engineering | 2 | 7 | 7280 | 10493 |
| 490 | Bioengineering | 2 | 7 | 6236 | 9384 |
| 490 | Rural Development | 1 | 7 | 1261 | 1531 |
| 490 | Preoperative Care | 1 | 7 | 250 | 386 |
| 490 | Biomechanics | 2 | 7 | 2266 | 3811 |
| 490 | perioperative care | 1 | 7 | 250 | 384 |
| 490 | Water Conservation | 2 | 7 | 133 | 330 |
| 490 | Adipose tissue | 1 | 7 | 212 | 447 |
| 490 | children | 1 | 7 | 1142 | 1531 |
| 499 | Optics | 1 | 6 | 7535 | 7669 |
| 499 | Manufacturing Processes | 1 | 6 | 3915 | 4796 |
| 499 | Photonics | 1 | 6 | 2950 | 3871 |
| 499 | Quantum Chemistry | 1 | 6 | 1717 | 2022 |
| 499 | patient satisfaction | 1 | 6 | 375 | 503 |
| 499 | stem cell transplantation | 1 | 6 | 148 | 193 |
| 499 | Materials | 1 | 6 | 8893 | 10131 |
| 499 | Stem cells | 1 | 6 | 3027 | 4030 |
| 499 | Groundwater | 1 | 6 | 1373 | 1926 |
| 499 | Light | 1 | 6 | 1979 | 2841 |
| 499 | ecosystem | 1 | 6 | 2546 | 3681 |
| 510 | Civil Engineering | 3 | 5 | 2137 | 3622 |
| 510 | Altitude Sickness | 1 | 5 | 377 | 638 |
| 510 | Political Participation | 1 | 5 | 625 | 886 |
| 510 | Health insurance | 3 | 5 | 561 | 1657 |
| 510 | Citizenship | 1 | 5 | 327 | 524 |
| 510 | Environmental forensics | 1 | 5 | 212 | 414 |
| 510 | Altitude | 1 | 5 | 377 | 638 |
| 510 | industrial relations | 1 | 5 | 1600 | 2072 |
| 510 | irrigation | 1 | 5 | 746 | 1097 |
| 510 | drainage | 1 | 5 | 632 | 903 |
| 510 | Microscopy | 1 | 5 | 3363 | 4093 |
| 510 | Aquaculture | 1 | 5 | 2585 | 3443 |
| 522 | Climatology | 1 | 4 | 3198 | 4439 |
| 522 | Special Education | 1 | 4 | 1572 | 1992 |
| 522 | Journalism | 1 | 4 | 1036 | 1211 |
| 522 | Hydraulic Engineering | 1 | 4 | 1844 | 2456 |
| 522 | Forest Ecology | 1 | 4 | 1940 | 2851 |
| 522 | Dialysis | 1 | 4 | 351 | 424 |
| 522 | Disability Studies | 1 | 4 | 625 | 935 |
| 522 | Kidney transplantation | 1 | 4 | 196 | 324 |
| 522 | Herbal medicine | 1 | 4 | 1534 | 2502 |
| 522 | Ocular Motility Disorders | 1 | 4 | 55 | 58 |
| 522 | Learning disabilities | 1 | 4 | 1565 | 2314 |
| 522 | Reproductive toxicology | 1 | 4 | 1104 | 1722 |
| 522 | Forest Management | 1 | 4 | 1907 | 2724 |
| 522 | Multiple sclerosis | 1 | 4 | 1334 | 1823 |
| 522 | mathematical concepts | 1 | 4 | 893 | 1325 |
| 537 | Developmental Psychology | 1 | 3 | 1957 | 2941 |
| 537 | Educational Technology | 1 | 3 | 3053 | 4362 |
| 537 | Geopolitics | 1 | 3 | 603 | 931 |
| 537 | Immunopharmacology | 1 | 3 | 2150 | 3178 |
| 537 | cytokines | 1 | 3 | 2646 | 3921 |
| 537 | Asia | 2 | 3 | 4366 | 7299 |
| 537 | Learning | 1 | 3 | 2659 | 3838 |
| 537 | drug development | 1 | 3 | 2340 | 3692 |
| 537 | internet | 1 | 3 | 2476 | 3500 |
| 546 | Medical Physics | 2 | 2 | 2480 | 4058 |
| 546 | air quality management | 1 | 2 | 1240 | 2258 |
| 546 | Beetles | 1 | 2 | 347 | 450 |
| 546 | indoor air pollution | 1 | 2 | 901 | 1693 |
| 546 | Ventilation | 1 | 2 | 1187 | 2050 |
| 546 | Sick building syndrome | 1 | 2 | 901 | 1693 |
| 552 | History | 2 | 1 | 1615 | 1853 |
| 552 | Pediatric Dermatology | 1 | 1 | 1008 | 1591 |
| 552 | World History | 1 | 1 | 364 | 505 |
| 552 | Emergency Nursing | 1 | 1 | 417 | 855 |
| 552 | Vocational Education | 1 | 1 | 1078 | 1774 |
| 552 | Bioethics | 1 | 1 | 1908 | 2983 |
| 552 | Evidence-based practice | 3 | 1 | 143 | 396 |
| 552 | Vocational guidance | 1 | 1 | 1640 | 2644 |
| 552 | Japan | 1 | 1 | 4079 | 5614 |
| 552 | software | 1 | 1 | 2018 | 3366 |
| 552 | Development | 1 | 1 | 1623 | 2679 |
| 552 | Southern states | 1 | 1 | 706 | 1131 |
| 564 | Anthropology | 1 | 0 | 3275 | 4665 |
| 564 | Occupational Therapy | 1 | 0 | 2340 | 3716 |
| 564 | Mathematics | 1 | 0 | 9286 | 11911 |
| 564 | Energy Policy | 1 | 0 | 4627 | 6762 |
| 564 | Morphology | 1 | 0 | 1649 | 2484 |
| 564 | Hypertension | 1 | 0 | 3111 | 4526 |
| 564 | Art Criticism | 1 | 0 | 226 | 312 |
| 564 | Waste management | 1 | 0 | 2716 | 4332 |
| 564 | Bipolar Disorder | 1 | 0 | 774 | 1352 |
| 564 | Cardiovascular system | 1 | 0 | 3011 | 4445 |
| 564 | Gerontology | 1 | 0 | 3914 | 5578 |
| 564 | ethnic groups | 1 | 0 | 702 | 1413 |
| 564 | Family | 1 | 0 | 1900 | 3241 |
| 564 | families | 1 | 0 | 1684 | 2840 |
| 564 | Physicians | 1 | 0 | 178 | 336 |
| 564 | Visual arts education | 1 | 0 | 47 | 99 |
| 564 | Germany | 1 | 0 | 1605 | 2515 |
| 564 | energy resources | 1 | 0 | 2487 | 3991 |
| 564 | race relations | 1 | 0 | 1080 | 1648 |
| 564 | Mollusks | 1 | 0 | 548 | 974 |
| 564 | Egypt | 1 | 0 | 1232 | 2431 |
| 564 | Pancreatic diseases | 2 | 0 | 848 | 1408 |
