| 1 | Medicine | 414 | 18.2K | 691 | 693 |
| 2 | Science | 273 | 14.3K | 935 | 1156 |
| 3 | Biology | 149 | 9.3K | 1335 | 1430 |
| 4 | Public Health | 306 | 8.1K | 299 | 394 |
| 5 | Microbiology | 137 | 7.8K | 929 | 822 |
| 6 | Research | 239 | 7.6K | 825 | 862 |
| 7 | Physics | 23 | 6.0K | 4063 | 1964 |
| 8 | Diagnostic microbiology | 69 | 5.2K | 114 | 134 |
| 9 | Natural history | 8 | 4.7K | 2477 | 1325 |
| 10 | Epidemiology | 130 | 3.7K | 367 | 417 |
| 11 | Genetics | 22 | 3.0K | 1458 | 869 |
| 12 | Human genetics | 14 | 2.6K | 1085 | 1069 |
| 13 | Neurology | 66 | 2.0K | 1180 | 1421 |
| 14 | Altitude Sickness | 42 | 1.9K | 4 | 2 |
| 14 | Altitude | 42 | 1.9K | 4 | 2 |
| 16 | Physiology | 50 | 1.9K | 990 | 927 |
| 17 | Psychiatry | 50 | 1.9K | 1023 | 1041 |
| 17 | Parasitology | 75 | 1.9K | 309 | 323 |
| 19 | Mental Disorders | 36 | 1.7K | 781 | 755 |
| 20 | Tropical Medicine | 64 | 1.6K | 163 | 160 |
| 21 | Pharmacognosy | 24 | 1.6K | 522 | 301 |
| 22 | Medical Microbiology | 29 | 1.5K | 682 | 680 |
| 23 | Chemistry | 26 | 1.4K | 4062 | 3280 |
| 24 | Biochemistry | 41 | 1.4K | 3122 | 2919 |
| 25 | Medicinal plants | 18 | 1.4K | 428 | 226 |
| 26 | Endocrinology | 25 | 1.4K | 1058 | 962 |
| 27 | Respiration | 45 | 1.4K | 253 | 301 |
| 28 | Environment | 38 | 1.3K | 1371 | 1939 |
| 29 | Immunology | 27 | 1.3K | 1341 | 1277 |
| 30 | Malaria | 32 | 1.3K | 126 | 102 |
| 31 | Post-traumatic stress disorder | 1 | 1.3K | 1231 | 140 |
| 32 | Environmental Health | 53 | 1.3K | 1174 | 1639 |
| 33 | Parasitic Diseases | 51 | 1.2K | 304 | 431 |
| 34 | Molecular Biology | 30 | 1.2K | 3063 | 3085 |
| 35 | Pediatrics | 23 | 1.1K | 773 | 722 |
| 36 | health behavior | 29 | 1.1K | 206 | 179 |
| 37 | Developing countries | 36 | 1.0K | 402 | 440 |
| 38 | Behavior | 32 | 1.0K | 857 | 1074 |
| 39 | Global Health | 61 | 1.0K | 64 | 95 |
| 40 | Parasites | 35 | 962 | 290 | 306 |
| 41 | Metabolism | 12 | 903 | 1378 | 1074 |
| 42 | Medical genetics | 13 | 872 | 1413 | 1277 |
| 43 | Psychology | 35 | 849 | 1397 | 1455 |
| 44 | Ecology | 31 | 827 | 2188 | 2828 |
| 45 | Metabolic diseases | 12 | 824 | 1156 | 1016 |
| 46 | Host-parasite interactions | 9 | 765 | 660 | 645 |
| 47 | Obstetrics | 16 | 762 | 964 | 662 |
| 48 | Clinical Immunology | 8 | 746 | 739 | 344 |
| 49 | Immunity | 8 | 740 | 1173 | 1133 |
| 50 | Critical Care | 19 | 730 | 562 | 760 |
| 50 | Genomics | 17 | 730 | 1361 | 1200 |
| 52 | Critical Care Medicine | 17 | 719 | 582 | 755 |
| 53 | Ethnology | 15 | 703 | 556 | 209 |
| 54 | Toxicology | 19 | 698 | 2058 | 1922 |
| 55 | Diabetes mellitus | 21 | 694 | 711 | 917 |
| 55 | Diabetes | 21 | 694 | 777 | 946 |
| 55 | Vaccines | 18 | 694 | 703 | 606 |
| 58 | Dermatology | 19 | 601 | 665 | 589 |
| 59 | Bacterial infections | 15 | 572 | 248 | 434 |
| 60 | Disease | 3 | 541 | 326 | 493 |
| 61 | diseases | 2 | 531 | 425 | 505 |
| 62 | Health Policy | 22 | 529 | 704 | 782 |
| 63 | Biodiversity | 15 | 510 | 928 | 966 |
| 64 | Sociology | 14 | 492 | 1323 | 1055 |
| 65 | Obesity | 14 | 476 | 861 | 986 |
| 66 | Primary health care | 25 | 475 | 428 | 508 |
| 67 | Nutrition | 31 | 472 | 1315 | 2090 |
| 68 | Immunopathology | 9 | 465 | 706 | 597 |
| 69 | Virulence | 7 | 463 | 724 | 785 |
| 70 | Medical Anthropology | 12 | 462 | 518 | 617 |
| 71 | Mental illness | 11 | 454 | 1001 | 1081 |
| 72 | Cytology | 12 | 452 | 2338 | 2558 |
| 72 | Health Services Research | 19 | 452 | 531 | 577 |
| 74 | Neurobiology | 15 | 425 | 784 | 1053 |
| 75 | personality | 3 | 416 | 1359 | 740 |
| 75 | disease vectors | 17 | 416 | 300 | 373 |
| 77 | infection | 23 | 412 | 490 | 838 |
| 78 | Hematology | 9 | 408 | 1738 | 1548 |
| 79 | Diet | 17 | 403 | 812 | 1221 |
| 79 | Human biology | 12 | 403 | 235 | 153 |
| 81 | Pharmaceutical Chemistry | 11 | 398 | 2283 | 2126 |
| 82 | Environmental Policy | 10 | 385 | 1732 | 2001 |
| 83 | Virology | 15 | 381 | 1432 | 2179 |
| 84 | Evolutionary Genetics | 12 | 372 | 173 | 193 |
| 84 | Molecular Epidemiology | 12 | 372 | 173 | 193 |
| 86 | Child | 13 | 367 | 1105 | 1011 |
| 87 | Marine Biology | 19 | 364 | 1069 | 1315 |
| 88 | health planning | 11 | 355 | 1071 | 767 |
| 89 | Chromosome mapping | 7 | 354 | 1234 | 1101 |
| 89 | gene mapping | 7 | 354 | 1347 | 1278 |
| 91 | Adolescent | 11 | 352 | 992 | 864 |
| 92 | mycoses | 3 | 346 | 819 | 576 |
| 93 | Globalization | 10 | 344 | 203 | 160 |
| 93 | international cooperation | 10 | 344 | 236 | 220 |
| 95 | Andrology | 19 | 338 | 155 | 238 |
| 96 | Reproduction | 9 | 337 | 1352 | 1118 |
| 97 | Alternative Medicine | 9 | 336 | 1037 | 770 |
| 97 | complementary therapies | 9 | 336 | 1075 | 785 |
| 99 | Travel | 24 | 332 | 143 | 231 |
| 100 | Botany | 3 | 321 | 3635 | 2262 |
| 101 | Bioorganic chemistry | 7 | 320 | 1996 | 1667 |
| 102 | Social Psychology | 3 | 318 | 2045 | 1108 |
| 103 | Organic Chemistry | 6 | 313 | 2397 | 1775 |
| 104 | Environmental monitoring | 11 | 310 | 2125 | 2501 |
| 105 | health services accessibility | 33 | 300 | 143 | 381 |
| 106 | Geriatrics | 10 | 299 | 1626 | 1463 |
| 107 | Geriatric Psychiatry | 7 | 297 | 673 | 568 |
| 108 | Health | 12 | 296 | 1006 | 1052 |
| 109 | Environmental Engineering | 9 | 293 | 2419 | 2359 |
| 110 | Women's health | 17 | 292 | 365 | 504 |
| 111 | occupational diseases | 10 | 285 | 388 | 446 |
| 112 | Health Services Administration | 12 | 283 | 381 | 445 |
| 113 | Oral Medicine | 13 | 280 | 205 | 153 |
| 114 | Randomized Controlled Trials | 14 | 277 | 407 | 370 |
| 115 | Evidence-Based Medicine | 5 | 276 | 983 | 477 |
| 116 | Embryology | 4 | 275 | 1291 | 1109 |
| 117 | Genes | 2 | 273 | 1469 | 553 |
| 118 | Bacteriology | 10 | 270 | 1040 | 1406 |
| 119 | Sleep Disorders | 21 | 253 | 531 | 913 |
| 119 | arthritis | 13 | 253 | 570 | 948 |
| 119 | Sleep | 21 | 253 | 537 | 920 |
| 122 | biological evolution | 9 | 252 | 1186 | 1530 |
| 123 | human behavior | 3 | 247 | 2359 | 1866 |
| 124 | preimplantation genetic diagnosis | 4 | 246 | 384 | 183 |
| 124 | embryo transfer | 4 | 246 | 402 | 190 |
| 126 | Cardiovascular diseases | 9 | 244 | 912 | 907 |
| 127 | Medical innovations | 4 | 243 | 851 | 1138 |
| 128 | Antibacterial agents | 8 | 242 | 359 | 431 |
| 129 | Cell Biology | 9 | 240 | 2554 | 3270 |
| 130 | behavioral medicine | 3 | 237 | 1290 | 935 |
| 130 | Pollution | 11 | 237 | 3085 | 4008 |
| 132 | medical education | 11 | 236 | 835 | 841 |
| 133 | Health promotion | 16 | 235 | 506 | 786 |
| 133 | drug development | 3 | 235 | 1078 | 1069 |
| 135 | Hypertension | 6 | 234 | 1129 | 1384 |
| 136 | Climatology | 6 | 233 | 1270 | 1162 |
| 137 | Antigens | 5 | 231 | 677 | 529 |
| 138 | Health Education | 9 | 230 | 970 | 915 |
| 139 | Pharmacology | 14 | 225 | 2793 | 3693 |
| 140 | Developmental Biology | 2 | 224 | 2300 | 1603 |
| 141 | Cancer | 11 | 222 | 2004 | 2686 |
| 142 | Environmental Law | 6 | 221 | 731 | 1054 |
| 142 | environmental protection | 6 | 221 | 2623 | 2465 |
| 144 | Nervous system | 4 | 220 | 2107 | 1809 |
| 145 | Medical Laboratory Science | 4 | 218 | 2011 | 1733 |
| 146 | Antibodies | 3 | 213 | 682 | 422 |
| 147 | Chronic diseases | 6 | 205 | 417 | 533 |
| 148 | Infections | 10 | 201 | 564 | 975 |
| 149 | Clinical Chemistry | 6 | 195 | 2200 | 2203 |
| 150 | Cardiovascular system | 4 | 190 | 1317 | 1575 |
| 151 | United States | 8 | 189 | 3427 | 3139 |
| 152 | Biogeochemistry | 3 | 186 | 1100 | 965 |
| 153 | Fisheries | 3 | 185 | 1641 | 1074 |
| 154 | Meteorology | 4 | 179 | 1941 | 1873 |
| 155 | Community Psychiatry | 4 | 177 | 830 | 704 |
| 156 | Climate change | 4 | 174 | 900 | 1345 |
| 156 | natural products | 7 | 174 | 1204 | 1096 |
| 158 | Geophysics | 2 | 170 | 3884 | 2575 |
| 158 | Dementia | 22 | 170 | 569 | 781 |
| 158 | Planets | 2 | 170 | 1670 | 1359 |
| 158 | Alzheimer's disease | 22 | 170 | 586 | 870 |
| 162 | Pathology | 5 | 169 | 1853 | 1877 |
| 163 | Decision making | 4 | 168 | 1304 | 918 |
| 164 | Psychiatric Epidemiology | 3 | 167 | 486 | 431 |
| 165 | Visual Perception | 5 | 164 | 1248 | 1194 |
| 165 | Memory | 5 | 164 | 1352 | 1365 |
| 165 | Attention | 5 | 164 | 1289 | 1240 |
| 165 | Perception | 5 | 164 | 1379 | 1329 |
| 169 | Microbial Ecology | 4 | 163 | 1980 | 2210 |
| 170 | preventive medicine | 15 | 161 | 451 | 980 |
| 171 | Molecular evolution | 5 | 160 | 1153 | 1349 |
| 172 | Environmental Toxicology | 5 | 158 | 1969 | 2187 |
| 172 | United Kingdom | 7 | 158 | 1028 | 1307 |
| 174 | environmental pollution | 6 | 152 | 3252 | 3849 |
| 175 | Quality of life | 7 | 151 | 936 | 1284 |
| 176 | Public Policy | 3 | 150 | 1754 | 1328 |
| 177 | urban health | 4 | 149 | 208 | 212 |
| 178 | Oceanography | 7 | 148 | 1240 | 1395 |
| 179 | Neurosurgery | 8 | 144 | 587 | 828 |
| 179 | Sports Medicine | 1 | 144 | 3624 | 1579 |
| 179 | Water pollution | 8 | 144 | 1768 | 2448 |
| 182 | Nanotechnology | 4 | 143 | 4174 | 3993 |
| 182 | Earth Sciences | 11 | 143 | 1811 | 2378 |
| 184 | Research Design | 3 | 141 | 1193 | 956 |
| 185 | Socioeconomic Factors | 10 | 140 | 299 | 582 |
| 185 | Transport | 3 | 140 | 599 | 520 |
| 187 | epilepsy | 6 | 138 | 606 | 666 |
| 188 | Mental Health | 5 | 135 | 1243 | 1139 |
| 188 | Population Genetics | 6 | 135 | 855 | 1203 |
| 190 | Systems Biology | 6 | 134 | 1078 | 1292 |
| 191 | biological factors | 7 | 133 | 1298 | 1558 |
| 192 | Nursing | 14 | 132 | 757 | 1058 |
| 192 | Pediatric Neurology | 2 | 132 | 1144 | 1242 |
| 192 | Pathogens | 8 | 132 | 12 | 51 |
| 195 | environmental exposure | 7 | 131 | 1218 | 1715 |
| 196 | Plant Ecology | 4 | 130 | 1529 | 1698 |
| 197 | Contraception | 6 | 123 | 344 | 443 |
| 198 | Conservation Biology | 5 | 121 | 889 | 1113 |
| 199 | Rheumatology | 4 | 120 | 1039 | 1078 |
| 200 | drug resistance | 6 | 118 | 412 | 658 |
| 201 | Nanostructured Materials | 2 | 117 | 3346 | 2655 |
| 201 | Smoking | 3 | 117 | 739 | 721 |
| 203 | Sustainable Development | 2 | 116 | 2632 | 1918 |
| 204 | Marine Pollution | 5 | 115 | 912 | 1232 |
| 205 | Food | 6 | 112 | 2334 | 2980 |
| 206 | Biotechnology | 7 | 111 | 4376 | 5781 |
| 206 | Oncology | 4 | 111 | 2074 | 2780 |
| 208 | Carcinogenesis | 5 | 110 | 772 | 1115 |
| 209 | Clinical Biochemistry | 3 | 109 | 1248 | 1090 |
| 210 | Sea | 2 | 108 | 664 | 509 |
| 210 | Fishery resources | 2 | 108 | 736 | 543 |
| 212 | Ecological Genetics | 4 | 106 | 569 | 440 |
| 213 | Geology | 10 | 105 | 1809 | 2348 |
| 214 | health workforce | 6 | 102 | 86 | 219 |
| 214 | drug therapy | 3 | 102 | 2262 | 2211 |
| 216 | Physical fitness | 4 | 100 | 929 | 954 |
| 217 | Developmental Immunology | 1 | 96 | 1380 | 846 |
| 218 | air quality management | 4 | 95 | 392 | 538 |
| 218 | indoor air pollution | 4 | 95 | 304 | 401 |
| 218 | Ventilation | 4 | 95 | 432 | 472 |
| 218 | Sick building syndrome | 4 | 95 | 304 | 401 |
| 218 | genome | 1 | 95 | 2506 | 1968 |
| 223 | Surface Chemistry | 3 | 94 | 3515 | 3395 |
| 223 | Colloids | 3 | 94 | 3408 | 3500 |
| 225 | Biophysics | 4 | 93 | 5052 | 5366 |
| 225 | Hemodynamics | 2 | 93 | 719 | 815 |
| 227 | Aging | 8 | 92 | 1806 | 2527 |
| 228 | Liver diseases | 2 | 91 | 1640 | 1764 |
| 229 | Environmental Management | 1 | 87 | 4220 | 3339 |
| 230 | Zoology | 6 | 86 | 1957 | 2079 |
| 231 | Artificial Intelligence | 1 | 84 | 5157 | 3358 |
| 231 | Cognitive Science | 1 | 84 | 2328 | 1570 |
| 231 | venom | 5 | 84 | 532 | 765 |
| 231 | Toxins | 5 | 84 | 617 | 853 |
| 235 | child abuse | 1 | 83 | 1246 | 885 |
| 235 | drugs | 2 | 83 | 2735 | 2255 |
| 237 | ecosystem | 7 | 82 | 820 | 1589 |
| 238 | Food Microbiology | 3 | 81 | 1230 | 1635 |
| 238 | Infertility | 4 | 81 | 786 | 1170 |
| 238 | fertility | 4 | 81 | 850 | 1226 |
| 238 | eugenics | 2 | 81 | 695 | 560 |
| 242 | Biodiversity conservation | 4 | 80 | 1482 | 2135 |
| 242 | Respiratory system | 2 | 80 | 734 | 708 |
| 242 | breastfeeding | 4 | 80 | 390 | 472 |
| 245 | Reproductive health | 5 | 79 | 558 | 830 |
| 245 | Birth control | 5 | 79 | 309 | 535 |
| 247 | Immunotherapy | 4 | 75 | 1721 | 2371 |
| 247 | bioclimatology | 3 | 75 | 938 | 972 |
| 249 | Inorganic Chemistry | 2 | 74 | 162 | 140 |
| 249 | Bioinorganic chemistry | 2 | 74 | 1655 | 1450 |
| 251 | Breeding | 3 | 73 | 1199 | 1307 |
| 252 | Bacteria | 3 | 72 | 354 | 594 |
| 253 | Gene expression regulation | 2 | 71 | 1246 | 1192 |
| 254 | Urology | 2 | 70 | 1940 | 1831 |
| 254 | Histocompatibility Testing | 3 | 70 | 479 | 540 |
| 256 | Cytogenetics | 2 | 68 | 1830 | 2031 |
| 256 | global environmental change | 1 | 68 | 1382 | 1223 |
| 258 | Clinical Pharmacology | 1 | 67 | 2349 | 1585 |
| 258 | Infection control | 3 | 67 | 635 | 776 |
| 258 | Hospitals | 3 | 67 | 606 | 658 |
| 258 | Agriculture | 6 | 67 | 1664 | 2389 |
| 262 | Anthropology | 6 | 66 | 1098 | 1308 |
| 263 | Kidney diseases | 4 | 64 | 827 | 1138 |
| 264 | Molecular Genetics | 4 | 63 | 1588 | 2431 |
| 264 | Substance Abuse | 7 | 63 | 890 | 1472 |
| 264 | Endocrine system | 2 | 63 | 942 | 309 |
| 267 | epidemiologic methods | 3 | 62 | 157 | 157 |
| 267 | Cell differentiation | 1 | 62 | 2478 | 2406 |
| 267 | DNA methylation | 1 | 62 | 553 | 507 |
| 267 | Molecular structure | 5 | 62 | 2002 | 2537 |
| 271 | proteins | 3 | 61 | 2160 | 2376 |
| 272 | Anatomy | 7 | 60 | 1280 | 2083 |
| 272 | Neurophysiology | 7 | 60 | 1872 | 3312 |
| 272 | Pregnancy | 4 | 60 | 718 | 983 |
| 275 | Comparative Physiology | 1 | 59 | 1161 | 938 |
| 275 | Biocompatible Materials | 1 | 59 | 4848 | 4402 |
| 277 | Eutrophication | 2 | 58 | 1174 | 1793 |
| 278 | women's rights | 2 | 56 | 243 | 209 |
| 278 | Vaccination | 1 | 56 | 576 | 444 |
| 278 | Latin America | 19 | 56 | 485 | 821 |
| 278 | rehabilitation | 3 | 56 | 2267 | 2647 |
| 278 | Primates | 1 | 56 | 1161 | 821 |
| 283 | Computational Biology | 3 | 55 | 3077 | 3414 |
| 284 | Urban Policy | 2 | 54 | 952 | 1042 |
| 284 | Herbal medicine | 1 | 54 | 1311 | 1248 |
| 284 | city planning | 2 | 54 | 1951 | 1699 |
| 284 | Climate | 2 | 54 | 750 | 861 |
| 284 | weather | 2 | 54 | 715 | 802 |
| 284 | Flow cytometry | 1 | 54 | 757 | 589 |
| 290 | Biomedical Engineering | 4 | 53 | 4672 | 5898 |
| 290 | Emergency Medical Services | 4 | 53 | 650 | 870 |
| 290 | management | 3 | 53 | 3321 | 3572 |
| 290 | planning | 3 | 53 | 719 | 802 |
| 294 | Proteome | 2 | 52 | 1434 | 1732 |
| 295 | Dentistry | 5 | 51 | 560 | 675 |
| 295 | Ecological Engineering | 1 | 51 | 1150 | 1141 |
| 297 | Physical Chemistry | 2 | 50 | 2661 | 2567 |
| 297 | Environmental Chemistry | 2 | 50 | 2622 | 2940 |
| 297 | Inflammation | 2 | 50 | 1581 | 1939 |
| 297 | pollutants | 2 | 50 | 2299 | 2733 |
| 297 | Environmental pollutants | 2 | 50 | 2735 | 3103 |
| 302 | hazard mitigation | 1 | 49 | 1681 | 1310 |
| 302 | natural disasters | 1 | 49 | 2107 | 1779 |
| 304 | South America | 2 | 48 | 152 | 68 |
| 305 | Entomology | 4 | 47 | 2099 | 2288 |
| 306 | Psychosomatic Medicine | 3 | 46 | 729 | 1194 |
| 306 | Depression | 1 | 46 | 632 | 752 |
| 306 | Anxiety Disorders | 1 | 46 | 832 | 952 |
| 306 | Child Development | 4 | 46 | 1613 | 2427 |
| 306 | risk factors | 2 | 46 | 874 | 972 |
| 306 | Anxiety | 1 | 46 | 832 | 946 |
| 312 | Mycology | 3 | 45 | 1654 | 1983 |
| 312 | Culture | 6 | 45 | 762 | 985 |
| 314 | Astronomy | 2 | 44 | 2813 | 2997 |
| 314 | History of Medicine | 8 | 44 | 273 | 258 |
| 316 | Clinical Trials | 1 | 42 | 1056 | 730 |
| 316 | Marine Ecology | 4 | 42 | 644 | 978 |
| 316 | Neonatology | 4 | 42 | 501 | 846 |
| 316 | Oncogenes | 1 | 42 | 1649 | 2001 |
| 316 | disabilities | 2 | 42 | 922 | 981 |
| 321 | Ophthalmology | 3 | 40 | 1746 | 2298 |
| 321 | Clinical Psychology | 1 | 40 | 2047 | 2016 |
| 321 | Protozoa | 1 | 40 | 753 | 676 |
| 324 | Technology | 2 | 39 | 4989 | 4983 |
| 325 | Food Security | 1 | 38 | 336 | 381 |
| 326 | Asthma | 3 | 37 | 698 | 960 |
| 326 | Genetic engineering | 3 | 37 | 2263 | 3276 |
| 328 | Molecular ecology | 3 | 36 | 1075 | 1973 |
| 328 | Arthropods | 1 | 36 | 516 | 332 |
| 328 | Microorganisms | 1 | 36 | 1691 | 1852 |
| 328 | primary prevention | 2 | 36 | 504 | 722 |
| 328 | chronic disease | 2 | 36 | 390 | 519 |
| 328 | Insects | 1 | 36 | 2209 | 1701 |
| 334 | Chemotherapy | 2 | 35 | 1664 | 2140 |
| 334 | Morphology | 4 | 35 | 716 | 965 |
| 334 | poverty | 1 | 35 | 840 | 715 |
| 334 | healthcare disparities | 1 | 35 | 909 | 798 |
| 334 | Australia | 3 | 35 | 1979 | 2385 |
| 334 | Aquaculture | 4 | 35 | 1235 | 1851 |
| 340 | Animal ecology | 3 | 34 | 1172 | 1627 |
| 340 | Parkinson's disease | 1 | 34 | 433 | 491 |
| 342 | Engineering | 1 | 33 | 6724 | 5288 |
| 342 | Paleontology | 4 | 33 | 1151 | 1551 |
| 342 | Ethics | 1 | 33 | 1646 | 1208 |
| 342 | Food Policy | 2 | 33 | 405 | 680 |
| 342 | Engineering Ethics | 1 | 33 | 390 | 358 |
| 342 | agricultural policy | 2 | 33 | 291 | 560 |
| 342 | Professional ethics | 1 | 33 | 546 | 481 |
| 342 | world | 2 | 33 | 879 | 1430 |
| 350 | Materials Science | 2 | 32 | 5083 | 5291 |
| 350 | Transportation Engineering | 1 | 32 | 844 | 725 |
| 350 | Systems Analysis | 2 | 32 | 1378 | 1556 |
| 350 | Neurovirology | 1 | 32 | 459 | 463 |
| 350 | Emergency Medicine | 3 | 32 | 1423 | 1847 |
| 350 | Transportation | 1 | 32 | 2463 | 2190 |
| 350 | Birds | 2 | 32 | 1385 | 1333 |
| 357 | food technology | 1 | 31 | 3637 | 3699 |
| 357 | Gerontology | 2 | 31 | 2386 | 2450 |
| 357 | Edible plants | 1 | 31 | 454 | 554 |
| 360 | Pacific Islands | 1 | 30 | 644 | 416 |
| 360 | Asia | 1 | 30 | 4573 | 3444 |
| 362 | Computer-Aided Design | 1 | 29 | 2020 | 1827 |
| 362 | Plant breeding | 1 | 29 | 1421 | 1322 |
| 362 | Transgenic plants | 1 | 29 | 897 | 1022 |
| 362 | Evolution | 1 | 29 | 2797 | 2841 |
| 366 | Biomass Energy | 1 | 28 | 3516 | 3667 |
| 366 | Biogeochemical cycles | 1 | 28 | 682 | 907 |
| 366 | soil conservation | 2 | 28 | 1025 | 1399 |
| 366 | soil pollution | 1 | 28 | 1104 | 1005 |
| 366 | animal diseases | 2 | 28 | 626 | 888 |
| 366 | disaster relief | 1 | 28 | 456 | 444 |
| 366 | freshwater biology | 2 | 28 | 1173 | 1467 |
| 373 | Biopharmaceutics | 1 | 27 | 1997 | 2047 |
| 373 | Hemostasis | 1 | 27 | 1193 | 1169 |
| 373 | Thrombosis | 1 | 27 | 1559 | 1678 |
| 373 | gene therapy | 1 | 27 | 1786 | 2060 |
| 373 | visualization | 4 | 27 | 1407 | 1519 |
| 373 | traffic safety | 2 | 27 | 395 | 526 |
| 379 | Medical Oncology | 3 | 26 | 1737 | 2938 |
| 379 | Respiratory Infections | 3 | 26 | 369 | 670 |
| 379 | nucleic acids | 2 | 26 | 2032 | 2829 |
| 379 | Antarctica | 4 | 26 | 417 | 757 |
| 379 | Influenza | 3 | 26 | 267 | 561 |
| 384 | Dental Public Health | 2 | 25 | 173 | 267 |
| 384 | Hormones | 2 | 25 | 1549 | 2195 |
| 386 | Data Mining | 3 | 24 | 1669 | 2910 |
| 386 | data collection | 3 | 24 | 1059 | 2112 |
| 388 | Brachytherapy | 1 | 23 | 371 | 310 |
| 388 | men | 2 | 23 | 385 | 581 |
| 390 | Medical Technology | 3 | 22 | 1920 | 3291 |
| 390 | Surgery | 3 | 22 | 1842 | 2973 |
| 390 | Veterinary Immunology | 2 | 22 | 463 | 724 |
| 390 | Metabolic syndrome | 1 | 22 | 564 | 636 |
| 390 | fossil | 1 | 22 | 100 | 72 |
| 390 | mammals | 2 | 22 | 1272 | 1609 |
| 396 | Education | 6 | 21 | 2808 | 4421 |
| 396 | Coastal zone management | 1 | 21 | 1130 | 1322 |
| 396 | sanitation | 2 | 21 | 1844 | 2956 |
| 396 | Marine resources | 1 | 21 | 1175 | 1353 |
| 396 | energy development | 1 | 21 | 1676 | 1835 |
| 396 | Cerebellum | 4 | 21 | 219 | 646 |
| 396 | Cognition | 4 | 21 | 1393 | 2492 |
| 396 | Cerebellar ataxia | 4 | 21 | 219 | 646 |
| 404 | Paleoclimatology | 2 | 20 | 1199 | 1720 |
| 404 | Paleoecology | 2 | 20 | 1161 | 1621 |
| 404 | Polymers | 1 | 20 | 5557 | 5565 |
| 404 | Environmental Economics | 1 | 20 | 805 | 830 |
| 404 | Political Ecology | 1 | 20 | 198 | 130 |
| 404 | Wildlife conservation | 2 | 20 | 1441 | 2228 |
| 404 | Paleogeography | 2 | 20 | 1026 | 1500 |
| 404 | Human evolution | 1 | 20 | 657 | 803 |
| 404 | Nanostructures | 1 | 20 | 3342 | 3470 |
| 404 | Stem cells | 1 | 20 | 2341 | 2717 |
| 404 | polymerization | 1 | 20 | 4782 | 4746 |
| 415 | Geography | 2 | 19 | 2636 | 3348 |
| 415 | Archaeology | 5 | 19 | 1068 | 1725 |
| 415 | Emerging infectious diseases | 1 | 19 | 716 | 943 |
| 415 | dietary supplements | 1 | 19 | 1481 | 1773 |
| 419 | Immunogenetics | 2 | 18 | 883 | 1340 |
| 420 | Social Sciences | 5 | 17 | 3006 | 4699 |
| 420 | Molecular Microbiology | 1 | 17 | 1358 | 1805 |
| 420 | Animal Behavior | 1 | 17 | 2670 | 3189 |
| 420 | Health equity | 1 | 17 | 155 | 147 |
| 420 | Ethology | 1 | 17 | 2091 | 2615 |
| 420 | carcinogens | 1 | 17 | 1675 | 2137 |
| 420 | Neurons | 1 | 17 | 917 | 1389 |
| 420 | mutagens | 1 | 17 | 1336 | 1782 |
| 420 | family violence | 1 | 17 | 726 | 904 |
| 420 | plant communities | 1 | 17 | 1601 | 2012 |
| 420 | Europe | 2 | 17 | 3880 | 4711 |
| 420 | Psychophysiology | 1 | 17 | 3669 | 4321 |
| 432 | Maternal health services | 1 | 16 | 703 | 891 |
| 432 | Child welfare | 1 | 16 | 1813 | 1959 |
| 432 | Phylogeny | 1 | 16 | 1409 | 1854 |
| 435 | Neurochemistry | 1 | 15 | 3231 | 3916 |
| 435 | Ocean Engineering | 2 | 15 | 1880 | 2699 |
| 435 | peptides | 1 | 15 | 1626 | 1727 |
| 438 | Bioengineering | 2 | 14 | 5024 | 7036 |
| 438 | Nuclear Physics | 2 | 14 | 4070 | 4619 |
| 438 | ethnicity | 1 | 14 | 1273 | 1171 |
| 438 | health and race | 1 | 14 | 441 | 612 |
| 438 | ethnic groups | 1 | 14 | 596 | 767 |
| 438 | Therapeutics | 1 | 14 | 2781 | 3576 |
| 438 | biomedicine | 1 | 14 | 1750 | 2138 |
| 438 | cosmetics | 1 | 14 | 408 | 546 |
| 446 | Catalysis | 1 | 13 | 4176 | 4743 |
| 446 | Forensic Genetics | 1 | 13 | 413 | 584 |
| 446 | Public Health Administration | 3 | 13 | 375 | 665 |
| 446 | Ecophysiology | 1 | 13 | 501 | 687 |
| 446 | Developmental Disabilities | 1 | 13 | 1523 | 1981 |
| 446 | gastrointestinal tract | 2 | 13 | 438 | 1021 |
| 452 | free radicals | 2 | 12 | 1592 | 2849 |
| 452 | drug addiction | 3 | 12 | 1057 | 2205 |
| 452 | Steroids | 1 | 12 | 1572 | 2010 |
| 452 | alcoholism | 3 | 12 | 1398 | 2728 |
| 452 | biological agents | 1 | 12 | 1234 | 888 |
| 452 | Microscopy | 1 | 12 | 2606 | 2657 |
| 452 | Multiple sclerosis | 2 | 12 | 733 | 1117 |
| 452 | Mollusks | 1 | 12 | 480 | 469 |
| 452 | Marine mammals | 1 | 12 | 455 | 571 |
| 461 | Planetary Science | 1 | 11 | 877 | 1003 |
| 461 | Pharmacogenetics | 1 | 11 | 1662 | 2302 |
| 461 | Human Rights | 2 | 11 | 748 | 1117 |
| 461 | emergency management | 2 | 11 | 1124 | 1988 |
| 461 | nutrition policy | 1 | 11 | 223 | 255 |
| 461 | Language and Education | 1 | 11 | 301 | 308 |
| 461 | Composite Materials | 1 | 11 | 3546 | 4280 |
| 461 | Digestive system diseases | 2 | 11 | 1117 | 1977 |
| 469 | Philosophy | 2 | 10 | 1857 | 1567 |
| 469 | Analytical Chemistry | 1 | 10 | 5766 | 6720 |
| 469 | Ornithology | 1 | 10 | 1471 | 1596 |
| 469 | Fungi | 1 | 10 | 1585 | 2033 |
| 473 | Computer Graphics | 1 | 9 | 2597 | 3110 |
| 473 | Electrocardiography | 2 | 9 | 440 | 745 |
| 473 | Immunochemistry | 2 | 9 | 1280 | 2216 |
| 473 | Genetic testing | 1 | 9 | 719 | 967 |
| 473 | Animal genetics | 1 | 9 | 966 | 1313 |
| 473 | Genetic regulation | 1 | 9 | 1840 | 2462 |
| 473 | protein | 1 | 9 | 1947 | 2414 |
| 473 | Electrophysiology | 2 | 9 | 1293 | 2040 |
| 473 | immunoassay | 2 | 9 | 273 | 620 |
| 473 | weight loss | 1 | 9 | 272 | 444 |
| 473 | Information Science | 1 | 9 | 3821 | 4463 |
| 473 | hygiene | 1 | 9 | 999 | 1377 |
| 485 | Occupational Health | 3 | 8 | 1112 | 2271 |
| 485 | Geographic information systems | 1 | 8 | 1918 | 2327 |
| 485 | Artificial Organs | 1 | 8 | 1052 | 1339 |
| 485 | Molecular cloning | 2 | 8 | 1846 | 3137 |
| 485 | Genetic recombination | 2 | 8 | 1819 | 3092 |
| 485 | Bone diseases | 2 | 8 | 592 | 1287 |
| 485 | Continental shelf | 1 | 8 | 626 | 925 |
| 485 | disease outbreaks | 2 | 8 | 676 | 1443 |
| 485 | Atomic spectroscopy | 1 | 8 | 1743 | 2083 |
| 485 | Recombinant DNA | 2 | 8 | 1923 | 3266 |
| 495 | Medical Ethics | 2 | 7 | 1411 | 2375 |
| 495 | Integrative Medicine | 1 | 7 | 576 | 772 |
| 495 | Holistic Health | 1 | 7 | 941 | 1291 |
| 495 | Protein folding | 1 | 7 | 189 | 329 |
| 495 | animals | 1 | 7 | 2099 | 2570 |
| 495 | rare diseases | 1 | 7 | 1137 | 1676 |
| 495 | prions | 1 | 7 | 168 | 298 |
| 495 | Zoonoses | 1 | 7 | 600 | 1003 |
| 503 | Marine biodiversity | 1 | 6 | 493 | 640 |
| 503 | adolescence | 1 | 6 | 1455 | 2012 |
| 503 | Adolescent Psychology | 1 | 6 | 1353 | 1865 |
| 503 | Bipolar Disorder | 1 | 6 | 567 | 889 |
| 503 | Mental Health Services | 2 | 6 | 1547 | 2831 |
| 503 | air quality | 1 | 6 | 545 | 916 |
| 503 | violence | 1 | 6 | 1478 | 2161 |
| 510 | Behavioral research | 2 | 5 | 646 | 1580 |
| 510 | Osteoporosis | 1 | 5 | 691 | 1161 |
| 510 | Foodborne diseases | 1 | 5 | 515 | 849 |
| 510 | Japan | 1 | 5 | 3272 | 4014 |
| 510 | Population | 1 | 5 | 1722 | 2371 |
| 515 | Economics | 2 | 4 | 4550 | 6031 |
| 515 | Early Childhood Education | 1 | 4 | 918 | 1256 |
| 515 | Gender Studies | 1 | 4 | 835 | 1315 |
| 515 | Queer Studies | 1 | 4 | 520 | 911 |
| 515 | Veterinary Pathology | 2 | 4 | 431 | 859 |
| 515 | Medical Physics | 1 | 4 | 2579 | 3398 |
| 515 | Ethnoarchaeology | 1 | 4 | 326 | 557 |
| 515 | Animal breeding | 2 | 4 | 928 | 1762 |
| 515 | Cross-Cultural Studies | 1 | 4 | 1245 | 1879 |
| 515 | Indigenous Peoples | 1 | 4 | 247 | 333 |
| 515 | economic policy | 1 | 4 | 3621 | 4146 |
| 515 | implementation science | 1 | 4 | 94 | 138 |
| 515 | older people | 1 | 4 | 2589 | 3052 |
| 515 | homosexuality | 1 | 4 | 692 | 1140 |
| 515 | cross-cultural comparison | 1 | 4 | 965 | 1548 |
| 515 | China | 1 | 4 | 4386 | 5791 |
| 515 | Plants | 1 | 4 | 2993 | 3882 |
| 532 | Humanities | 3 | 3 | 2040 | 3832 |
| 532 | Electrical Engineering | 1 | 3 | 5141 | 5671 |
| 532 | Pharmacy | 2 | 3 | 2599 | 4676 |
| 532 | Neuropsychiatry | 1 | 3 | 1372 | 2077 |
| 532 | civil rights | 1 | 3 | 734 | 1062 |
| 532 | Pharmacy management | 2 | 3 | 345 | 812 |
| 532 | wind erosion | 1 | 3 | 226 | 488 |
| 532 | Family | 2 | 3 | 1142 | 2303 |
| 532 | families | 2 | 3 | 1048 | 1972 |
| 532 | Allergy | 2 | 3 | 1361 | 2618 |
| 542 | Linguistics | 1 | 2 | 2330 | 2721 |
| 542 | Horticulture | 1 | 2 | 1366 | 1956 |
| 542 | Agricultural Ecology | 1 | 2 | 1905 | 2959 |
| 542 | Palynology | 1 | 2 | 502 | 790 |
| 542 | Geochemistry | 1 | 2 | 2738 | 3874 |
| 542 | nuclear magnetic resonance | 1 | 2 | 1524 | 2130 |
| 542 | Synthetic biology | 1 | 2 | 592 | 990 |
| 542 | philology | 1 | 2 | 1164 | 805 |
| 542 | Cosmochemistry | 1 | 2 | 1408 | 2125 |
| 542 | nuclear magnetic resonance spectroscopy | 1 | 2 | 1151 | 1636 |
| 542 | social conflict | 2 | 2 | 283 | 656 |
| 542 | Menopause | 1 | 2 | 572 | 974 |
| 554 | Orthopedics | 1 | 1 | 2430 | 3471 |
| 554 | International Relations | 1 | 1 | 1858 | 2288 |
| 554 | Journalism | 1 | 1 | 898 | 1244 |
| 554 | Diagnosis | 1 | 1 | 1229 | 2141 |
| 554 | Mass Media | 1 | 1 | 1544 | 1983 |
| 554 | Patient Safety | 1 | 1 | 187 | 400 |
| 554 | Social Media | 1 | 1 | 407 | 652 |
| 554 | Wildlife management | 1 | 1 | 1008 | 1581 |
| 554 | press | 1 | 1 | 263 | 424 |
| 554 | Diplomatic relations | 1 | 1 | 1215 | 1457 |
| 554 | Germany | 1 | 1 | 1243 | 1764 |
| 554 | Mountains | 1 | 1 | 788 | 1314 |
| 566 | Biogeography | 1 | 0 | 1414 | 2165 |
| 566 | Pediatric Hematology | 1 | 0 | 648 | 1099 |
| 566 | Cosmology | 1 | 0 | 1884 | 2491 |
| 566 | Public Administration | 3 | 0 | 1421 | 3218 |
| 566 | Particle Physics | 1 | 0 | 1234 | 1683 |
| 566 | Telemedicine | 1 | 0 | 804 | 1690 |
| 566 | Religion | 1 | 0 | 1550 | 1953 |
| 566 | Land use | 1 | 0 | 1867 | 2966 |
| 566 | Neurotransmitters | 1 | 0 | 809 | 1160 |
| 566 | Radiation | 1 | 0 | 3297 | 4732 |
| 566 | Sexual health | 1 | 0 | 1259 | 1858 |
| 566 | Qualitative Research | 1 | 0 | 861 | 1615 |
| 566 | blood transfusion | 1 | 0 | 1159 | 1892 |
| 566 | Radioisotopes | 1 | 0 | 1917 | 2897 |
| 566 | species diversity | 1 | 0 | 21 | 40 |
| 566 | land degradation | 1 | 0 | 948 | 1587 |
| 566 | Brain | 1 | 0 | 3597 | 5145 |
| 566 | Africa | 1 | 0 | 2790 | 4177 |
| 566 | Middle East | 1 | 0 | 1744 | 2563 |
| 566 | Condensed Matter | 1 | 0 | 4097 | 5291 |
| 566 | India | 1 | 0 | 2793 | 4051 |
| 566 | Venezuela | 1 | 0 | 220 | 317 |
| 566 | degradation | 1 | 0 | 948 | 1587 |
| 566 | Exercise | 1 | 0 | 2186 | 3238 |
| 566 | Allergies | 1 | 0 | 310 | 737 |
