| 1 | Microbiology | 704 | 36.2K | 255 | 246 |
| 2 | Virology | 479 | 35.8K | 94 | 124 |
| 3 | Research | 948 | 26.2K | 259 | 302 |
| 4 | Public Health | 1,182 | 25.0K | 64 | 146 |
| 5 | Science | 289 | 18.3K | 1103 | 1115 |
| 6 | preventive medicine | 723 | 17.1K | 3 | 15 |
| 7 | Cytology | 31 | 17.1K | 1827 | 410 |
| 8 | Health Policy | 721 | 17.0K | 6 | 12 |
| 9 | Medicine | 354 | 17.0K | 982 | 802 |
| 10 | Cell Biology | 14 | 15.8K | 2676 | 427 |
| 11 | Biology | 144 | 9.3K | 1812 | 1680 |
| 12 | Epidemiology | 372 | 8.9K | 137 | 219 |
| 13 | Diagnostic microbiology | 110 | 8.8K | 69 | 49 |
| 14 | Physics | 69 | 7.4K | 3255 | 2140 |
| 15 | Medical Microbiology | 201 | 6.4K | 107 | 199 |
| 16 | Natural history | 25 | 6.2K | 1718 | 1362 |
| 17 | viruses | 116 | 5.7K | 165 | 187 |
| 18 | Molecular Biology | 102 | 5.5K | 1894 | 1534 |
| 19 | Immunology | 132 | 5.1K | 652 | 726 |
| 20 | Parasitic Diseases | 167 | 4.9K | 70 | 105 |
| 21 | Biochemistry | 131 | 4.4K | 2083 | 1870 |
| 22 | Parasitology | 128 | 3.7K | 174 | 147 |
| 23 | Neurology | 27 | 3.6K | 2556 | 1304 |
| 24 | Bacterial infections | 120 | 3.3K | 12 | 71 |
| 25 | Vaccines | 99 | 3.1K | 162 | 150 |
| 26 | infection | 101 | 2.9K | 103 | 165 |
| 27 | Ecology | 58 | 2.9K | 1825 | 1570 |
| 28 | Microbial Ecology | 63 | 2.8K | 430 | 488 |
| 29 | Bacteria | 94 | 2.8K | 8 | 24 |
| 30 | Infections | 88 | 2.7K | 60 | 139 |
| 31 | Environment | 43 | 2.4K | 1524 | 1514 |
| 32 | Immunity | 32 | 2.2K | 672 | 738 |
| 33 | Nutrition | 32 | 2.1K | 1671 | 955 |
| 34 | Diet | 21 | 1.9K | 928 | 528 |
| 35 | Mental Disorders | 26 | 1.7K | 1257 | 822 |
| 36 | Surgery | 7 | 1.7K | 1896 | 764 |
| 37 | Host-parasite interactions | 25 | 1.6K | 385 | 418 |
| 38 | Chemistry | 66 | 1.6K | 3229 | 3539 |
| 39 | Virulence | 33 | 1.5K | 297 | 372 |
| 40 | Molecular Microbiology | 29 | 1.5K | 253 | 295 |
| 41 | Transplantation | 44 | 1.5K | 295 | 350 |
| 42 | Psychiatry | 22 | 1.3K | 2147 | 1467 |
| 43 | Biotechnology | 30 | 1.2K | 2721 | 2388 |
| 44 | Antibacterial agents | 23 | 1.2K | 109 | 55 |
| 45 | Histology | 16 | 1.2K | 923 | 476 |
| 46 | Bacteriology | 21 | 944 | 823 | 832 |
| 47 | Analytical Chemistry | 22 | 913 | 2273 | 1725 |
| 48 | Food Microbiology | 16 | 892 | 516 | 378 |
| 49 | Mycology | 27 | 846 | 525 | 478 |
| 50 | mycoses | 20 | 810 | 199 | 348 |
| 51 | drug resistance | 29 | 800 | 59 | 74 |
| 52 | sex differences | 1 | 799 | 334 | 9 |
| 53 | Pharmaceutical Chemistry | 16 | 758 | 2285 | 1749 |
| 54 | Hematology | 12 | 743 | 2371 | 1484 |
| 55 | Microorganisms | 25 | 727 | 314 | 473 |
| 56 | Computational Biology | 37 | 692 | 728 | 1027 |
| 57 | Immunotherapy | 20 | 667 | 763 | 929 |
| 58 | biological factors | 13 | 664 | 1002 | 606 |
| 59 | Bioinformatics | 29 | 658 | 618 | 808 |
| 60 | Bioengineering | 21 | 653 | 2114 | 2391 |
| 61 | Biophysics | 31 | 627 | 2610 | 2794 |
| 62 | Evolutionary Genetics | 18 | 624 | 107 | 85 |
| 62 | Molecular Epidemiology | 18 | 624 | 107 | 85 |
| 64 | Genetics | 10 | 589 | 2849 | 2369 |
| 65 | gene mapping | 17 | 587 | 943 | 987 |
| 66 | Quality of life | 15 | 564 | 589 | 521 |
| 67 | Medical Laboratory Science | 19 | 561 | 851 | 926 |
| 68 | Emerging infectious diseases | 17 | 550 | 55 | 53 |
| 69 | Cancer | 13 | 517 | 2418 | 2207 |
| 70 | Tropical Medicine | 18 | 509 | 762 | 537 |
| 71 | Pediatrics | 11 | 508 | 1776 | 1519 |
| 72 | Allergy | 5 | 502 | 1229 | 956 |
| 73 | Clinical Chemistry | 11 | 499 | 2026 | 1613 |
| 74 | genome | 24 | 498 | 533 | 1033 |
| 75 | disease vectors | 16 | 488 | 353 | 296 |
| 76 | Chemical analysis | 11 | 473 | 669 | 392 |
| 77 | Public Policy | 10 | 469 | 1017 | 666 |
| 78 | Infection control | 22 | 467 | 128 | 162 |
| 78 | disease outbreaks | 16 | 467 | 179 | 214 |
| 80 | Epidemics | 14 | 463 | 200 | 214 |
| 81 | Pathology | 27 | 456 | 936 | 1405 |
| 82 | Therapeutics | 10 | 434 | 1202 | 1080 |
| 83 | Obesity | 8 | 429 | 1558 | 1205 |
| 84 | Environmental Microbiology | 12 | 425 | 721 | 788 |
| 85 | Environmental Health | 25 | 408 | 2424 | 3383 |
| 86 | Travel | 22 | 395 | 177 | 181 |
| 87 | Europe | 201 | 391 | 184 | 1341 |
| 88 | Respiratory Infections | 19 | 388 | 65 | 68 |
| 88 | Influenza | 19 | 388 | 33 | 44 |
| 90 | Zoonoses | 11 | 387 | 89 | 72 |
| 91 | DNA polymerases | 4 | 379 | 441 | 458 |
| 92 | Psychology | 11 | 372 | 3453 | 2574 |
| 93 | Spectrum analysis | 4 | 370 | 4570 | 2580 |
| 94 | Liver diseases | 5 | 368 | 1452 | 1205 |
| 95 | Toxicology | 13 | 361 | 3133 | 3083 |
| 96 | Molecular structure | 6 | 359 | 2237 | 1255 |
| 97 | Biochemical Engineering | 1 | 351 | 5609 | 2793 |
| 98 | Pharmacology | 9 | 334 | 4343 | 3661 |
| 99 | Immune system | 3 | 321 | 1324 | 1058 |
| 100 | Attention | 10 | 316 | 1223 | 1105 |
| 101 | Molecular evolution | 11 | 315 | 874 | 1014 |
| 102 | Information Systems | 2 | 307 | 2225 | 637 |
| 103 | biological evolution | 8 | 295 | 1571 | 1602 |
| 104 | Genetic engineering | 6 | 289 | 1985 | 1581 |
| 105 | gene therapy | 4 | 287 | 1258 | 899 |
| 106 | Botany | 4 | 286 | 4099 | 2720 |
| 107 | Nanotechnology | 5 | 283 | 4835 | 3619 |
| 107 | Stem cells | 8 | 283 | 1265 | 1177 |
| 109 | Industrial Microbiology | 2 | 282 | 2903 | 1406 |
| 110 | Germany | 74 | 280 | 46 | 78 |
| 111 | Mathematics | 1 | 274 | 9338 | 2886 |
| 112 | Biomedical Engineering | 7 | 273 | 4473 | 3389 |
| 113 | Metabolism | 7 | 263 | 2482 | 2425 |
| 113 | Biodiversity | 7 | 263 | 1882 | 1490 |
| 115 | drug control | 3 | 262 | 438 | 167 |
| 116 | rehabilitation | 7 | 261 | 1784 | 1322 |
| 117 | Visual Perception | 7 | 255 | 1446 | 1206 |
| 117 | Memory | 7 | 255 | 1574 | 1364 |
| 117 | Perception | 7 | 255 | 1610 | 1335 |
| 120 | Genomics | 16 | 253 | 1785 | 2424 |
| 121 | Proteome | 15 | 248 | 559 | 960 |
| 122 | Endocrinology | 5 | 242 | 3144 | 2698 |
| 123 | Geriatrics | 7 | 233 | 2593 | 1895 |
| 124 | Hypertension | 6 | 232 | 1504 | 1690 |
| 125 | Sociology | 4 | 230 | 3337 | 1760 |
| 126 | United States | 5 | 229 | 5613 | 3324 |
| 127 | Nervous system | 5 | 227 | 2525 | 2168 |
| 128 | United Kingdom | 12 | 226 | 914 | 1302 |
| 129 | Medical Anthropology | 3 | 222 | 1573 | 1097 |
| 130 | Microscopy | 8 | 220 | 1205 | 811 |
| 131 | Primates | 15 | 218 | 308 | 393 |
| 132 | Health promotion | 17 | 215 | 598 | 980 |
| 133 | Proteomics | 9 | 214 | 725 | 946 |
| 133 | Cell differentiation | 5 | 214 | 1710 | 1778 |
| 135 | Herbal medicine | 4 | 208 | 663 | 451 |
| 135 | Chromosome mapping | 13 | 208 | 1005 | 1572 |
| 137 | Sleep Disorders | 6 | 205 | 1495 | 1166 |
| 137 | Metabolic diseases | 5 | 205 | 2436 | 2382 |
| 137 | hygiene | 12 | 205 | 169 | 247 |
| 137 | Sleep | 6 | 205 | 1500 | 1166 |
| 141 | Primary health care | 17 | 202 | 740 | 1024 |
| 141 | Physical fitness | 7 | 202 | 784 | 676 |
| 143 | Health | 6 | 194 | 2031 | 1627 |
| 144 | Human genetics | 8 | 193 | 1857 | 3418 |
| 145 | Raman spectroscopy | 2 | 187 | 1231 | 496 |
| 145 | antibiotics | 1 | 187 | 860 | 235 |
| 147 | Health insurance | 1 | 181 | 1029 | 311 |
| 148 | Medical innovations | 2 | 180 | 1641 | 1519 |
| 149 | soil microbiology | 5 | 179 | 1328 | 1541 |
| 149 | Biometrics | 5 | 179 | 1017 | 757 |
| 151 | drug therapy | 3 | 176 | 3037 | 2052 |
| 152 | Genetic regulation | 6 | 173 | 1008 | 1279 |
| 153 | Pediatric Neurology | 3 | 166 | 1310 | 1448 |
| 154 | Medical genetics | 8 | 164 | 2313 | 3070 |
| 155 | drugs | 4 | 162 | 2510 | 1797 |
| 156 | Membranes | 4 | 158 | 1837 | 1783 |
| 157 | Clinical Pharmacology | 2 | 157 | 2275 | 1257 |
| 157 | cloning | 3 | 157 | 835 | 918 |
| 159 | Foodborne diseases | 2 | 155 | 414 | 157 |
| 160 | Antibodies | 11 | 153 | 355 | 606 |
| 160 | Antigens | 11 | 153 | 514 | 804 |
| 162 | Organic Chemistry | 3 | 149 | 3681 | 2688 |
| 162 | Bioorganic chemistry | 3 | 149 | 3305 | 2599 |
| 164 | behavioral medicine | 2 | 148 | 2045 | 1281 |
| 165 | Respiration | 3 | 147 | 1889 | 1457 |
| 166 | Parasites | 10 | 146 | 1040 | 1242 |
| 167 | Steroids | 3 | 145 | 1215 | 880 |
| 168 | miniaturization | 3 | 141 | 2287 | 1976 |
| 169 | Genetic therapy | 3 | 140 | 1565 | 1392 |
| 170 | Cardiovascular diseases | 6 | 139 | 1460 | 1285 |
| 170 | Hormones | 2 | 139 | 1942 | 1357 |
| 170 | sexual behavior | 3 | 139 | 753 | 542 |
| 173 | drug development | 2 | 138 | 1684 | 1581 |
| 174 | civil rights | 2 | 136 | 569 | 139 |
| 174 | Social policy | 2 | 136 | 1499 | 568 |
| 174 | Sexuality | 2 | 136 | 439 | 124 |
| 177 | Molecular cloning | 3 | 132 | 1851 | 1319 |
| 177 | Genetic recombination | 3 | 132 | 1825 | 1312 |
| 177 | Recombinant DNA | 3 | 132 | 1961 | 1422 |
| 180 | Technology | 4 | 129 | 4884 | 3573 |
| 180 | Exercise | 3 | 129 | 1619 | 891 |
| 180 | sports injuries | 3 | 129 | 657 | 259 |
| 183 | food technology | 3 | 128 | 3100 | 2448 |
| 184 | Zoology | 3 | 122 | 3177 | 2019 |
| 184 | Health Services Administration | 2 | 122 | 1796 | 927 |
| 184 | health workforce | 2 | 122 | 291 | 210 |
| 184 | Mental illness | 2 | 122 | 3117 | 2339 |
| 188 | ecosystem | 6 | 120 | 1136 | 1529 |
| 189 | Food | 2 | 119 | 4613 | 3221 |
| 189 | Ethnology | 3 | 119 | 1818 | 901 |
| 191 | Diabetes mellitus | 7 | 116 | 1795 | 2641 |
| 191 | epidemiologic methods | 2 | 116 | 253 | 69 |
| 191 | Carcinogenesis | 1 | 116 | 2038 | 1260 |
| 191 | Diabetes | 7 | 116 | 1899 | 2713 |
| 195 | Child | 7 | 115 | 2112 | 2259 |
| 196 | exobiology | 1 | 114 | 706 | 417 |
| 197 | Health Services Research | 11 | 113 | 1021 | 1506 |
| 198 | Global Health | 8 | 112 | 683 | 701 |
| 198 | Socioeconomic Factors | 4 | 112 | 742 | 655 |
| 198 | Chronic diseases | 5 | 112 | 655 | 931 |
| 201 | Clinical Immunology | 4 | 111 | 1481 | 1366 |
| 201 | health services accessibility | 6 | 111 | 743 | 737 |
| 201 | Plasma chemistry | 1 | 111 | 844 | 328 |
| 201 | risk factors | 5 | 111 | 670 | 731 |
| 201 | Plasma polymerization | 1 | 111 | 583 | 233 |
| 206 | transgenic organisms | 4 | 110 | 222 | 289 |
| 206 | mammals | 2 | 110 | 1589 | 907 |
| 208 | Public Health Administration | 36 | 108 | 80 | 239 |
| 209 | Fungi | 3 | 107 | 1249 | 1179 |
| 210 | Antiviral agents | 6 | 105 | 250 | 365 |
| 211 | Biocompatible Materials | 2 | 100 | 5039 | 4509 |
| 212 | Meteorology | 2 | 99 | 3346 | 2771 |
| 213 | air quality management | 2 | 98 | 836 | 531 |
| 213 | indoor air pollution | 2 | 98 | 607 | 407 |
| 213 | Ventilation | 2 | 98 | 820 | 480 |
| 213 | Sick building syndrome | 2 | 98 | 607 | 407 |
| 217 | Nanostructures | 1 | 97 | 4054 | 2407 |
| 217 | Molecular ecology | 4 | 97 | 1138 | 1589 |
| 219 | Medical Technology | 6 | 95 | 1533 | 1959 |
| 220 | Systems Biology | 9 | 93 | 1086 | 1568 |
| 221 | Yeast | 2 | 92 | 648 | 522 |
| 222 | proteins | 11 | 91 | 1392 | 2351 |
| 223 | Oncogenes | 3 | 90 | 1443 | 1938 |
| 224 | Immunopathology | 6 | 89 | 1242 | 1741 |
| 225 | drug addiction | 5 | 87 | 1057 | 1358 |
| 225 | alcoholism | 5 | 87 | 1378 | 1669 |
| 227 | Smoking | 3 | 86 | 867 | 919 |
| 228 | Combinatorial chemistry | 1 | 84 | 1797 | 1189 |
| 228 | Globalization | 4 | 84 | 487 | 520 |
| 228 | international cooperation | 4 | 84 | 535 | 639 |
| 231 | Adolescent | 8 | 82 | 1590 | 2210 |
| 232 | Dermatology | 2 | 81 | 2669 | 1920 |
| 233 | Neurosurgery | 2 | 80 | 1756 | 1414 |
| 234 | Bacterial diseases | 6 | 78 | 120 | 302 |
| 235 | nucleic acids | 4 | 74 | 1898 | 2478 |
| 236 | Catalysis | 1 | 70 | 5165 | 4029 |
| 236 | Biosensors | 2 | 70 | 1844 | 2150 |
| 236 | Bioelectronics | 2 | 70 | 1602 | 2004 |
| 236 | enzymes | 1 | 70 | 2879 | 2071 |
| 240 | Synaptic Transmission | 3 | 68 | 604 | 722 |
| 241 | Optics | 3 | 67 | 5938 | 4293 |
| 241 | Bioremediation | 2 | 67 | 1333 | 1216 |
| 241 | Genetically modified organisms | 2 | 67 | 30 | 24 |
| 241 | safety | 2 | 67 | 128 | 70 |
| 245 | Neurophysiology | 1 | 66 | 4908 | 3873 |
| 246 | Medical Ethics | 4 | 65 | 1226 | 1026 |
| 247 | Lung Transplantation | 1 | 64 | 1125 | 656 |
| 247 | Heart transplantation | 1 | 64 | 1125 | 656 |
| 247 | Substance Abuse | 3 | 64 | 1742 | 1705 |
| 250 | Nonlinear Dynamics | 2 | 63 | 2881 | 2458 |
| 250 | Statistical physics | 2 | 63 | 4752 | 3795 |
| 250 | Developing countries | 3 | 63 | 3146 | 2795 |
| 253 | Vaccination | 4 | 61 | 250 | 448 |
| 253 | pain management | 2 | 61 | 1081 | 861 |
| 253 | pain | 2 | 61 | 2145 | 1983 |
| 256 | Microelectronics | 2 | 57 | 2588 | 2414 |
| 257 | Molecular Genetics | 3 | 56 | 2237 | 2918 |
| 257 | animals | 3 | 56 | 1606 | 1377 |
| 259 | Community Psychiatry | 2 | 53 | 1584 | 1570 |
| 260 | Alternative Medicine | 1 | 51 | 3724 | 2597 |
| 260 | complementary therapies | 1 | 51 | 4118 | 2703 |
| 262 | Cell death | 1 | 50 | 2231 | 2117 |
| 263 | Veterinary Immunology | 3 | 48 | 432 | 542 |
| 263 | animal diseases | 2 | 48 | 695 | 645 |
| 265 | Pharmacy | 2 | 47 | 3208 | 3168 |
| 265 | infrared radiation | 1 | 47 | 1334 | 714 |
| 265 | Hospitals | 2 | 47 | 1098 | 1042 |
| 265 | arthritis | 2 | 47 | 1856 | 2289 |
| 269 | Behavior | 3 | 46 | 3940 | 5188 |
| 270 | adolescence | 3 | 45 | 1035 | 1301 |
| 270 | health planning | 2 | 45 | 3336 | 2925 |
| 272 | Personality Disorders | 1 | 44 | 555 | 434 |
| 273 | Research Design | 5 | 43 | 1138 | 1993 |
| 273 | Bioethics | 6 | 43 | 728 | 1037 |
| 273 | Plant genetic engineering | 2 | 43 | 1369 | 1584 |
| 273 | transgenic animals | 2 | 43 | 388 | 554 |
| 273 | Transgenic plants | 2 | 43 | 739 | 939 |
| 278 | Psychiatric Epidemiology | 1 | 42 | 1097 | 1079 |
| 279 | Bipolar Disorder | 1 | 41 | 734 | 687 |
| 280 | drug abuse | 6 | 40 | 483 | 975 |
| 280 | harm reduction | 6 | 40 | 120 | 325 |
| 280 | wildlife diseases | 2 | 40 | 227 | 147 |
| 283 | Language Disorders | 1 | 39 | 1594 | 1139 |
| 283 | Psycholinguistics | 1 | 39 | 1716 | 1393 |
| 283 | Writing | 1 | 39 | 546 | 448 |
| 283 | Reading | 1 | 39 | 1009 | 748 |
| 287 | Otolaryngology | 1 | 38 | 1238 | 926 |
| 288 | Anthropology | 2 | 37 | 2434 | 1925 |
| 288 | Mental Health | 3 | 37 | 2064 | 2443 |
| 288 | Adolescent Psychology | 2 | 37 | 1239 | 1313 |
| 288 | Human evolution | 2 | 37 | 608 | 769 |
| 288 | System analysis | 2 | 37 | 3632 | 3394 |
| 288 | Disease | 2 | 37 | 541 | 1081 |
| 294 | Sports Medicine | 2 | 36 | 3717 | 3138 |
| 295 | Clinical Psychology | 4 | 35 | 1524 | 2587 |
| 296 | Ophthalmology | 2 | 34 | 2591 | 2848 |
| 296 | Malaria | 3 | 34 | 912 | 1316 |
| 298 | Protozoa | 4 | 33 | 417 | 803 |
| 299 | Infrared spectroscopy | 1 | 32 | 820 | 677 |
| 299 | DNA | 3 | 32 | 729 | 1062 |
| 301 | Health Education | 2 | 31 | 3008 | 3145 |
| 302 | Education | 1 | 30 | 7409 | 4640 |
| 303 | Physical Therapy | 1 | 28 | 2699 | 2494 |
| 303 | Environmental Toxicology | 1 | 28 | 4547 | 4727 |
| 303 | Population Genetics | 1 | 28 | 2300 | 2398 |
| 303 | Environmental pollutants | 3 | 28 | 2837 | 4214 |
| 303 | drug toxicity | 1 | 28 | 1113 | 1140 |
| 303 | Entomology | 1 | 28 | 4141 | 3129 |
| 309 | Geography | 1 | 27 | 4347 | 3608 |
| 309 | Biogeography | 1 | 27 | 1740 | 2029 |
| 309 | Metallurgy | 1 | 27 | 4401 | 3486 |
| 309 | Animal health | 2 | 27 | 718 | 601 |
| 309 | Electrochemistry | 1 | 27 | 5873 | 5063 |
| 309 | Bones | 1 | 27 | 1822 | 1840 |
| 309 | drug evaluation | 2 | 27 | 2112 | 2606 |
| 316 | Anemia | 1 | 26 | 51 | 95 |
| 316 | Physical Chemistry | 3 | 26 | 2733 | 3636 |
| 318 | Human Rights | 1 | 25 | 1222 | 825 |
| 318 | blood transfusion | 3 | 25 | 987 | 1445 |
| 318 | Amyloidosis | 1 | 25 | 339 | 350 |
| 321 | Sports | 4 | 24 | 2141 | 2743 |
| 321 | Jurisprudence | 1 | 24 | 1894 | 1492 |
| 321 | Phylogeny | 1 | 24 | 1680 | 1916 |
| 324 | Agricultural Chemistry | 1 | 23 | 4151 | 4030 |
| 324 | Demography | 2 | 23 | 1070 | 1358 |
| 324 | Genetic translocation | 2 | 23 | 295 | 465 |
| 324 | cytokines | 3 | 23 | 1648 | 2796 |
| 324 | plasmids | 2 | 23 | 295 | 465 |
| 324 | Population | 2 | 23 | 1600 | 1859 |
| 330 | Hemodynamics | 1 | 21 | 1210 | 1468 |
| 330 | Environmental monitoring | 1 | 21 | 6675 | 7124 |
| 330 | food contamination | 1 | 21 | 2256 | 2065 |
| 330 | Africa | 2 | 21 | 2492 | 2441 |
| 334 | X-ray spectroscopy | 1 | 20 | 531 | 441 |
| 334 | medical education | 1 | 20 | 4046 | 3367 |
| 336 | Statistics | 3 | 19 | 3259 | 3859 |
| 336 | Chemotherapy | 1 | 19 | 2992 | 3131 |
| 336 | Conservation Biology | 1 | 19 | 2240 | 2387 |
| 336 | Wildlife conservation | 1 | 19 | 2216 | 2548 |
| 336 | Immunopharmacology | 2 | 19 | 1631 | 2309 |
| 336 | Digestive system diseases | 1 | 19 | 1936 | 2099 |
| 342 | free radicals | 1 | 18 | 2718 | 3133 |
| 342 | Women's health | 2 | 18 | 2151 | 2811 |
| 344 | Data Mining | 3 | 17 | 2235 | 3532 |
| 344 | Genetic Toxicology | 1 | 17 | 1067 | 1492 |
| 344 | Animal Behavior | 1 | 17 | 3360 | 3825 |
| 344 | mutation | 1 | 17 | 1274 | 1615 |
| 344 | Animal ecology | 1 | 17 | 2123 | 2180 |
| 344 | Ethology | 1 | 17 | 2674 | 3163 |
| 344 | Crystallography | 2 | 17 | 2401 | 2264 |
| 344 | X-ray crystallography | 2 | 17 | 872 | 1058 |
| 344 | data collection | 3 | 17 | 1511 | 2529 |
| 344 | Social behavior | 1 | 17 | 2207 | 2329 |
| 344 | gastrointestinal tract | 1 | 17 | 745 | 918 |
| 355 | Radiology | 1 | 16 | 3236 | 2950 |
| 355 | Radiobiology | 1 | 16 | 3097 | 3109 |
| 355 | Gene expression regulation | 3 | 16 | 1295 | 2338 |
| 355 | Respiratory system | 1 | 16 | 1247 | 1497 |
| 355 | protein | 3 | 16 | 1542 | 2507 |
| 360 | Clinical Biochemistry | 3 | 15 | 1721 | 2795 |
| 360 | Protein folding | 2 | 15 | 135 | 302 |
| 360 | prions | 2 | 15 | 109 | 246 |
| 363 | Social Sciences | 1 | 14 | 7305 | 5652 |
| 363 | Critical Care | 2 | 14 | 2508 | 3750 |
| 363 | Astrophysics | 1 | 14 | 4759 | 4750 |
| 363 | Polymers | 1 | 14 | 6992 | 7079 |
| 363 | Forest Ecology | 1 | 14 | 1947 | 2336 |
| 363 | emergency management | 2 | 14 | 1355 | 2129 |
| 363 | Quantitative Research | 1 | 14 | 404 | 540 |
| 363 | Forest Management | 1 | 14 | 1894 | 2204 |
| 363 | Calorimetry | 1 | 14 | 2341 | 2329 |
| 363 | polymerization | 1 | 14 | 6014 | 6026 |
| 363 | Culture techniques | 2 | 14 | 483 | 718 |
| 363 | Thermal analysis | 1 | 14 | 2341 | 2329 |
| 375 | Economic History | 1 | 13 | 6411 | 5235 |
| 375 | Economic Development | 1 | 13 | 3354 | 3450 |
| 375 | Anxiety Disorders | 1 | 13 | 1054 | 1517 |
| 375 | Anxiety | 1 | 13 | 1058 | 1516 |
| 375 | Development | 1 | 13 | 1640 | 2037 |
| 375 | Economic Assistance | 1 | 13 | 1487 | 1830 |
| 375 | world | 1 | 13 | 1488 | 2044 |
| 382 | Gender Studies | 1 | 12 | 973 | 1088 |
| 382 | Neuropsychology | 1 | 12 | 4162 | 4713 |
| 382 | Queer Studies | 1 | 12 | 601 | 785 |
| 382 | Electronics | 3 | 12 | 4334 | 5549 |
| 382 | Cytogenetics | 3 | 12 | 1985 | 3722 |
| 382 | Image Processing | 3 | 12 | 2459 | 3987 |
| 382 | Artificial Organs | 1 | 12 | 1398 | 1471 |
| 382 | Child Development | 2 | 12 | 2856 | 4171 |
| 382 | Electrons | 3 | 12 | 107 | 242 |
| 382 | homosexuality | 1 | 12 | 831 | 982 |
| 382 | scientific societies | 2 | 12 | 1281 | 2109 |
| 393 | Surface Chemistry | 1 | 11 | 5946 | 6679 |
| 393 | Serology | 3 | 11 | 648 | 1415 |
| 393 | Neurovirology | 2 | 11 | 377 | 817 |
| 393 | Patient education | 1 | 11 | 1301 | 1810 |
| 393 | Plant physiology | 1 | 11 | 3527 | 4182 |
| 393 | counseling | 1 | 11 | 2677 | 2931 |
| 393 | Colloids | 1 | 11 | 5866 | 6799 |
| 400 | Origin of life | 1 | 10 | 336 | 466 |
| 400 | Ichthyology | 1 | 10 | 1025 | 1034 |
| 400 | Well-being | 1 | 10 | 345 | 430 |
| 400 | Evolution | 1 | 10 | 3549 | 4267 |
| 400 | Organelle biogenesis | 1 | 10 | 489 | 655 |
| 400 | Fisheries | 1 | 10 | 3102 | 3372 |
| 400 | Fish | 1 | 10 | 816 | 884 |
| 407 | Photonics | 2 | 9 | 2376 | 3537 |
| 407 | Quality Control | 1 | 9 | 3694 | 4337 |
| 407 | Nuclear Chemistry | 2 | 9 | 1669 | 2250 |
| 407 | Radiation Protection | 1 | 9 | 1536 | 1432 |
| 407 | Radiochemistry | 2 | 9 | 1590 | 2098 |
| 407 | radiation monitoring | 1 | 9 | 1386 | 1342 |
| 407 | biobanks | 1 | 9 | 383 | 523 |
| 407 | Reproductive toxicology | 1 | 9 | 1060 | 1423 |
| 407 | food handling | 1 | 9 | 1825 | 2546 |
| 407 | Radiation dosimetry | 1 | 9 | 1127 | 1089 |
| 417 | Animal Biotechnology | 1 | 8 | 415 | 575 |
| 417 | Asthma | 1 | 8 | 1555 | 1978 |
| 417 | Adolescent Medicine | 1 | 8 | 1373 | 1888 |
| 417 | Social Psychology | 1 | 8 | 3850 | 4596 |
| 417 | biomedicine | 1 | 8 | 2032 | 2787 |
| 422 | Nursing | 1 | 7 | 3870 | 4156 |
| 422 | Graph Theory | 1 | 7 | 1486 | 1349 |
| 422 | Ornithology | 1 | 7 | 1784 | 1964 |
| 422 | psychotherapy | 2 | 7 | 1922 | 3021 |
| 422 | Birds | 1 | 7 | 2108 | 2240 |
| 422 | Decision making | 1 | 7 | 3197 | 3845 |
| 428 | Engineering | 1 | 6 | 8478 | 9116 |
| 428 | Ethics | 1 | 6 | 2071 | 2555 |
| 428 | Nuclear Physics | 1 | 6 | 5857 | 6300 |
| 428 | Solid State Physics | 1 | 6 | 5656 | 6419 |
| 428 | Engineering Ethics | 1 | 6 | 458 | 778 |
| 428 | Psychometrics | 2 | 6 | 607 | 1080 |
| 428 | Crystallization | 1 | 6 | 1090 | 1296 |
| 428 | Behavioral research | 2 | 6 | 746 | 1317 |
| 428 | Professional ethics | 1 | 6 | 640 | 1052 |
| 428 | Soviet Union | 1 | 6 | 1637 | 1627 |
| 438 | Economics | 1 | 5 | 6771 | 6966 |
| 438 | Mass Spectrometry | 2 | 5 | 1785 | 3060 |
| 438 | Soft Condensed Matter | 1 | 5 | 1943 | 2589 |
| 438 | venom | 7 | 5 | 560 | 2296 |
| 438 | Toxins | 7 | 5 | 636 | 2503 |
| 443 | Oncology | 1 | 4 | 4421 | 6084 |
| 443 | Obstetrics | 2 | 4 | 3768 | 5846 |
| 443 | Artificial Intelligence | 2 | 4 | 5270 | 7677 |
| 443 | Signal Transduction | 1 | 4 | 2673 | 3725 |
| 443 | Histochemistry | 1 | 4 | 2274 | 3030 |
| 443 | Dynamics | 1 | 4 | 3452 | 4060 |
| 443 | Nutrition physiology | 1 | 4 | 1612 | 2316 |
| 443 | Radiopharmaceuticals | 1 | 4 | 853 | 1046 |
| 443 | occupational diseases | 2 | 4 | 1480 | 3127 |
| 443 | Antioxidants | 1 | 4 | 1539 | 2386 |
| 443 | histological techniques | 1 | 4 | 1417 | 2193 |
| 443 | Inflammation | 1 | 4 | 2547 | 3571 |
| 443 | Pesticides | 1 | 4 | 1478 | 2141 |
| 443 | visualization | 4 | 4 | 1769 | 3088 |
| 443 | cell adhesion molecules | 1 | 4 | 1129 | 1874 |
| 443 | Radioisotopes | 1 | 4 | 2448 | 3067 |
| 443 | Chromosomes | 1 | 4 | 1920 | 2785 |
| 443 | plant molecular biology | 1 | 4 | 2731 | 3632 |
| 443 | cell interaction | 1 | 4 | 2311 | 3263 |
| 443 | Cell communication | 1 | 4 | 1687 | 2554 |
| 443 | Plants | 1 | 4 | 3776 | 4673 |
| 443 | Oxidation-reduction | 1 | 4 | 1549 | 2374 |
| 465 | Control Theory | 1 | 3 | 2975 | 3593 |
| 465 | health behavior | 2 | 3 | 1482 | 3086 |
| 465 | Genetic disorders | 3 | 3 | 639 | 1617 |
| 465 | Chromosome abnormalities | 3 | 3 | 49 | 61 |
| 465 | Biofilms | 1 | 3 | 417 | 755 |
| 465 | Family Therapy | 1 | 3 | 1416 | 2026 |
| 465 | child mental health | 1 | 3 | 912 | 1422 |
| 465 | Liposomes | 1 | 3 | 1130 | 1689 |
| 465 | Personality Assessment | 1 | 3 | 995 | 1544 |
| 465 | Mental Health Counseling | 1 | 3 | 243 | 375 |
| 475 | Geology | 1 | 2 | 5001 | 6310 |
| 475 | Occupational Health | 1 | 2 | 2585 | 3480 |
| 475 | Photography | 2 | 2 | 3990 | 4595 |
| 475 | Public Health Informatics | 2 | 2 | 148 | 266 |
| 475 | Analytical Biochemistry | 1 | 2 | 3365 | 4905 |
| 475 | industrial hygiene | 1 | 2 | 2638 | 3504 |
| 475 | monoclonal antibodies | 1 | 2 | 590 | 996 |
| 475 | Social Media | 1 | 2 | 458 | 645 |
| 483 | Environmental Engineering | 1 | 1 | 7078 | 9358 |
| 483 | Developmental Psychology | 1 | 1 | 1904 | 2976 |
| 483 | General Surgery | 1 | 1 | 1563 | 2296 |
| 483 | Oral Medicine | 1 | 1 | 1423 | 1960 |
| 483 | sanitation | 1 | 1 | 2882 | 4219 |
| 483 | Immunochemistry | 1 | 1 | 2169 | 3169 |
| 483 | breastfeeding | 1 | 1 | 1182 | 1980 |
| 483 | human development | 1 | 1 | 1417 | 2309 |
| 483 | Pollution | 3 | 1 | 6391 | 11444 |
| 483 | adulthood | 1 | 1 | 251 | 596 |
| 493 | Anatomy | 1 | 0 | 3692 | 5271 |
| 493 | Psychosomatic Medicine | 1 | 0 | 1718 | 2764 |
| 493 | Immunohematology | 1 | 0 | 328 | 633 |
| 493 | environmental protection | 2 | 0 | 5228 | 9065 |
| 493 | Neural circuitry | 1 | 0 | 3555 | 5112 |
| 493 | urban health | 1 | 0 | 641 | 1310 |
| 493 | patents | 1 | 0 | 421 | 999 |
| 493 | Organ transplantation | 1 | 0 | 827 | 1311 |
| 493 | Business | 1 | 0 | 3999 | 5582 |
| 493 | Blood group antigens | 1 | 0 | 219 | 445 |
| 493 | men | 1 | 0 | 702 | 1329 |
| 493 | management | 1 | 0 | 6061 | 8519 |
| 493 | environmental pollution | 2 | 0 | 6049 | 10091 |
| 493 | commerce | 1 | 0 | 3086 | 4387 |
| 493 | Psychophysiology | 1 | 0 | 4897 | 6821 |
| 493 | Pregnancy | 1 | 0 | 1910 | 3003 |
