| 1 | Medicine | 265 | 12.6K | 1309 | 1221 |
| 2 | Neurology | 176 | 10.0K | 941 | 866 |
| 3 | Psychiatry | 191 | 7.0K | 472 | 604 |
| 4 | Hematology | 353 | 6.9K | 357 | 476 |
| 5 | Epidemiology | 78 | 6.4K | 742 | 343 |
| 6 | Science | 143 | 6.0K | 2036 | 2687 |
| 7 | Chronic diseases | 51 | 4.9K | 99 | 95 |
| 8 | Surgery | 73 | 4.9K | 381 | 452 |
| 9 | Orthopedics | 98 | 4.8K | 159 | 101 |
| 10 | Mental Disorders | 137 | 4.5K | 344 | 500 |
| 11 | Biochemistry | 102 | 4.4K | 2454 | 2149 |
| 12 | Biology | 65 | 4.2K | 3166 | 3119 |
| 13 | Molecular Biology | 62 | 4.1K | 2687 | 2153 |
| 14 | Research | 154 | 4.0K | 1515 | 1793 |
| 15 | Mental illness | 109 | 3.9K | 198 | 331 |
| 16 | Health Services Research | 84 | 3.7K | 182 | 122 |
| 17 | Research Design | 33 | 3.7K | 268 | 108 |
| 18 | Immunology | 47 | 3.7K | 1336 | 1023 |
| 19 | Obstetrics | 163 | 3.6K | 267 | 295 |
| 20 | Cancer | 70 | 3.4K | 968 | 946 |
| 21 | Biophysics | 185 | 3.3K | 832 | 1216 |
| 22 | Oncology | 48 | 3.3K | 496 | 708 |
| 23 | Public Health | 62 | 3.2K | 1427 | 1025 |
| 24 | Physical Therapy | 20 | 2.8K | 506 | 180 |
| 25 | Psychology | 59 | 2.7K | 1204 | 928 |
| 26 | Neurophysiology | 25 | 2.5K | 1350 | 901 |
| 27 | Medical Physics | 159 | 2.3K | 137 | 281 |
| 28 | Chemistry | 19 | 2.2K | 5829 | 3420 |
| 29 | Microbiology | 29 | 2.1K | 3131 | 2347 |
| 30 | Physics | 29 | 2.1K | 4891 | 4412 |
| 31 | Geriatrics | 55 | 2.0K | 718 | 576 |
| 32 | Medical Oncology | 149 | 1.9K | 241 | 498 |
| 33 | Endocrinology | 36 | 1.8K | 1165 | 1155 |
| 34 | Radiobiology | 147 | 1.8K | 204 | 369 |
| 35 | Environmental Health | 23 | 1.8K | 2521 | 1622 |
| 36 | Orthopedic Surgery | 34 | 1.8K | 151 | 73 |
| 37 | Pharmacology | 63 | 1.7K | 1586 | 1738 |
| 38 | Nervous system | 21 | 1.7K | 1127 | 841 |
| 39 | medical education | 59 | 1.6K | 332 | 305 |
| 40 | Vaccines | 23 | 1.6K | 740 | 396 |
| 41 | Psychopharmacology | 35 | 1.6K | 513 | 531 |
| 42 | Pediatric Neurology | 11 | 1.6K | 695 | 491 |
| 43 | Psychophysiology | 33 | 1.5K | 1099 | 1009 |
| 44 | Asthma | 7 | 1.5K | 509 | 34 |
| 45 | Emergency Medicine | 33 | 1.5K | 479 | 239 |
| 46 | Allergy | 10 | 1.5K | 911 | 612 |
| 47 | drug therapy | 42 | 1.5K | 730 | 656 |
| 48 | Allergies | 6 | 1.5K | 62 | 14 |
| 49 | Cytology | 25 | 1.4K | 2146 | 2146 |
| 50 | Thrombosis | 85 | 1.4K | 79 | 285 |
| 51 | Medical genetics | 25 | 1.4K | 1450 | 1429 |
| 52 | Cell Biology | 26 | 1.4K | 1986 | 2208 |
| 53 | Diabetes mellitus | 25 | 1.4K | 896 | 943 |
| 53 | Hemostasis | 83 | 1.4K | 29 | 69 |
| 55 | Diabetes | 28 | 1.4K | 906 | 979 |
| 56 | Critical Care | 46 | 1.3K | 396 | 752 |
| 57 | Critical Care Medicine | 45 | 1.3K | 408 | 750 |
| 58 | Environment | 15 | 1.3K | 2932 | 2460 |
| 59 | Kidney diseases | 94 | 1.3K | 63 | 187 |
| 60 | psychotherapy | 34 | 1.3K | 370 | 378 |
| 61 | Cheminformatics | 1 | 1.3K | 789 | 106 |
| 61 | Informatics | 1 | 1.3K | 1743 | 139 |
| 63 | Metabolic diseases | 23 | 1.2K | 1158 | 1204 |
| 64 | Randomized Controlled Trials | 44 | 1.2K | 166 | 100 |
| 65 | Nephrology | 83 | 1.2K | 50 | 161 |
| 66 | Developmental Biology | 17 | 1.2K | 1060 | 964 |
| 67 | United States | 38 | 1.1K | 1715 | 1467 |
| 68 | Brain | 10 | 1.1K | 1930 | 1083 |
| 69 | pain | 32 | 1.1K | 401 | 476 |
| 70 | Natural history | 1 | 1.1K | 7708 | 3816 |
| 71 | rehabilitation | 39 | 1.1K | 520 | 589 |
| 72 | Reproduction | 32 | 1.1K | 822 | 744 |
| 73 | Palliative Care | 34 | 1.1K | 154 | 109 |
| 74 | Aging | 22 | 1.0K | 1348 | 942 |
| 75 | Primary health care | 38 | 1.0K | 397 | 355 |
| 76 | Pediatrics | 18 | 1.0K | 1397 | 1169 |
| 77 | blood transfusion | 48 | 1.0K | 124 | 148 |
| 78 | Metabolism | 29 | 1.0K | 1235 | 1445 |
| 79 | Clinical Chemistry | 25 | 988 | 1258 | 1173 |
| 80 | Eating Disorders | 21 | 975 | 302 | 218 |
| 80 | Feeding and Eating Disorders | 21 | 975 | 281 | 207 |
| 82 | Radiology | 35 | 974 | 431 | 294 |
| 83 | Chemotherapy | 29 | 971 | 440 | 378 |
| 84 | Physiology | 25 | 956 | 1994 | 1894 |
| 85 | Transplantation | 16 | 943 | 679 | 579 |
| 86 | Human genetics | 10 | 914 | 1744 | 2325 |
| 87 | Pathology | 32 | 884 | 880 | 1134 |
| 88 | drugs | 18 | 819 | 1011 | 679 |
| 89 | Embryology | 11 | 790 | 1084 | 878 |
| 90 | Neuropsychology | 15 | 778 | 1267 | 942 |
| 91 | Hypertension | 24 | 776 | 700 | 1075 |
| 91 | Behavior | 25 | 776 | 1294 | 1634 |
| 93 | Neurochemistry | 16 | 769 | 1349 | 1201 |
| 94 | Clinical Biochemistry | 40 | 768 | 252 | 389 |
| 95 | counseling | 17 | 748 | 564 | 384 |
| 96 | Urology | 33 | 739 | 731 | 893 |
| 97 | Gerontology | 12 | 735 | 1163 | 572 |
| 98 | Stem cells | 16 | 709 | 877 | 777 |
| 99 | Infertility | 18 | 704 | 557 | 535 |
| 100 | Nutrition | 23 | 701 | 2079 | 2177 |
| 101 | Dermatology | 30 | 682 | 681 | 785 |
| 101 | Family | 9 | 682 | 578 | 254 |
| 103 | Obesity | 29 | 679 | 736 | 1106 |
| 103 | fertility | 17 | 679 | 610 | 561 |
| 105 | Toxicology | 14 | 674 | 3029 | 2433 |
| 106 | Neuropsychiatry | 9 | 672 | 605 | 315 |
| 107 | Pharmaceutical Chemistry | 13 | 649 | 2574 | 2097 |
| 108 | Ecology | 7 | 640 | 5529 | 3992 |
| 108 | Environmental Engineering | 7 | 640 | 3236 | 1872 |
| 108 | Environmental Policy | 7 | 640 | 2597 | 1741 |
| 108 | Environmental Law | 7 | 640 | 816 | 667 |
| 108 | environmental protection | 7 | 640 | 2916 | 1563 |
| 108 | Environmental monitoring | 7 | 640 | 3225 | 2031 |
| 114 | Dialysis | 63 | 636 | 15 | 18 |
| 114 | Kidney transplantation | 63 | 636 | 14 | 18 |
| 116 | behavioral medicine | 13 | 634 | 635 | 594 |
| 117 | arthritis | 16 | 633 | 689 | 817 |
| 118 | Genetics | 10 | 629 | 3044 | 2710 |
| 119 | Cell differentiation | 6 | 615 | 1623 | 1246 |
| 120 | Anatomy | 6 | 596 | 1829 | 983 |
| 121 | Geriatric Oncology | 18 | 595 | 174 | 185 |
| 122 | Health Policy | 24 | 579 | 853 | 968 |
| 123 | Sociology | 6 | 577 | 2628 | 1160 |
| 124 | Diagnostic Imaging | 19 | 526 | 884 | 942 |
| 125 | sex crimes | 11 | 520 | 277 | 153 |
| 126 | Medical Anthropology | 5 | 507 | 1201 | 741 |
| 127 | Telemedicine | 12 | 504 | 110 | 85 |
| 128 | Immunopathology | 7 | 503 | 1174 | 750 |
| 129 | Homeostasis | 1 | 502 | 1016 | 750 |
| 129 | Cell metabolism | 1 | 502 | 1526 | 780 |
| 131 | Child | 24 | 500 | 1038 | 1111 |
| 132 | Cardiovascular system | 11 | 498 | 1127 | 1400 |
| 133 | Environmental Toxicology | 5 | 497 | 2340 | 1411 |
| 134 | Health | 30 | 492 | 704 | 1063 |
| 135 | Lipids | 7 | 488 | 1087 | 786 |
| 136 | Diagnostic microbiology | 5 | 486 | 1358 | 1129 |
| 137 | Membranes | 3 | 465 | 2122 | 1119 |
| 138 | Multiple sclerosis | 13 | 448 | 251 | 100 |
| 139 | Medical Microbiology | 10 | 434 | 1711 | 1820 |
| 140 | Marriage | 6 | 432 | 351 | 155 |
| 140 | Family Therapy | 6 | 432 | 568 | 232 |
| 140 | Marriage counseling | 6 | 432 | 211 | 110 |
| 143 | Rheumatology | 8 | 429 | 978 | 822 |
| 144 | Virology | 8 | 428 | 2573 | 2850 |
| 145 | human behavior | 10 | 426 | 1582 | 1815 |
| 146 | Schizophrenia | 14 | 422 | 597 | 719 |
| 147 | Therapeutics | 15 | 420 | 983 | 1287 |
| 148 | Radiography | 16 | 416 | 289 | 363 |
| 148 | Mental Health | 11 | 416 | 961 | 643 |
| 150 | United Kingdom | 7 | 415 | 1349 | 1049 |
| 151 | Holistic Health | 9 | 413 | 158 | 78 |
| 151 | allied health | 9 | 413 | 87 | 55 |
| 153 | Diet | 6 | 412 | 2004 | 1539 |
| 154 | Nursing | 13 | 411 | 971 | 582 |
| 155 | Otolaryngology | 22 | 410 | 198 | 279 |
| 156 | drug resistance | 6 | 408 | 510 | 264 |
| 156 | Growth | 3 | 408 | 1480 | 1047 |
| 158 | Psychoneuroimmunology | 4 | 405 | 699 | 435 |
| 158 | Neuroimmunology | 4 | 405 | 792 | 482 |
| 160 | health planning | 10 | 395 | 1309 | 815 |
| 161 | X-rays | 10 | 391 | 341 | 153 |
| 162 | Animal Behavior | 7 | 385 | 1542 | 1382 |
| 163 | Infection control | 12 | 379 | 287 | 273 |
| 164 | Ethology | 6 | 378 | 1309 | 1190 |
| 165 | Geriatric Psychiatry | 11 | 369 | 629 | 611 |
| 166 | Clinical Psychology | 6 | 367 | 1284 | 1084 |
| 166 | Bipolar Disorder | 9 | 367 | 231 | 250 |
| 166 | Leukemia | 24 | 367 | 564 | 950 |
| 169 | Neuropharmacology | 5 | 347 | 482 | 294 |
| 170 | preventive medicine | 15 | 343 | 633 | 894 |
| 171 | Respiration | 4 | 335 | 1712 | 1082 |
| 172 | Sleep Disorders | 14 | 329 | 992 | 1038 |
| 173 | pain management | 18 | 327 | 187 | 289 |
| 174 | Neurosurgery | 7 | 325 | 979 | 773 |
| 175 | Synaptic Transmission | 3 | 316 | 626 | 274 |
| 176 | Health Education | 14 | 309 | 985 | 1013 |
| 177 | Brain damage | 8 | 308 | 246 | 221 |
| 178 | Psychosomatic Medicine | 24 | 307 | 252 | 613 |
| 179 | Biocompatible Materials | 11 | 299 | 2524 | 3211 |
| 180 | Nuclear Medicine | 12 | 297 | 641 | 714 |
| 181 | Parenteral nutrition | 7 | 292 | 906 | 858 |
| 182 | Thorax | 9 | 291 | 289 | 373 |
| 183 | Neurobiology | 6 | 286 | 1669 | 1712 |
| 183 | Artificial Intelligence | 4 | 286 | 3913 | 2212 |
| 183 | Sleep | 7 | 286 | 1461 | 1134 |
| 186 | Hemodynamics | 6 | 285 | 539 | 602 |
| 187 | Biotechnology | 1 | 284 | 10153 | 5148 |
| 188 | alcoholism | 13 | 277 | 833 | 1071 |
| 189 | drug abuse | 8 | 276 | 401 | 316 |
| 190 | Clinical Pharmacology | 5 | 274 | 1494 | 992 |
| 191 | Evidence-Based Medicine | 6 | 273 | 1017 | 540 |
| 192 | Women's health | 10 | 269 | 762 | 733 |
| 193 | Pediatric Nursing | 3 | 265 | 627 | 164 |
| 193 | Obstetric Nursing | 3 | 265 | 426 | 105 |
| 195 | Alternative Medicine | 7 | 261 | 1406 | 1106 |
| 195 | complementary therapies | 7 | 261 | 1545 | 1119 |
| 197 | Adolescent | 20 | 259 | 899 | 1395 |
| 198 | Mental Health Services | 5 | 257 | 1236 | 724 |
| 199 | occupational diseases | 3 | 256 | 1202 | 629 |
| 200 | Child Development | 4 | 252 | 2137 | 1521 |
| 201 | families | 3 | 250 | 1009 | 378 |
| 202 | Patient education | 8 | 244 | 407 | 495 |
| 203 | Inflammation | 4 | 240 | 1398 | 1118 |
| 204 | Oncogenes | 5 | 238 | 1206 | 1481 |
| 205 | Developmental Disabilities | 1 | 234 | 1939 | 833 |
| 205 | cell physiology | 9 | 234 | 1093 | 1594 |
| 207 | Genomics | 9 | 233 | 2619 | 2958 |
| 208 | Genetic therapy | 7 | 232 | 1064 | 1229 |
| 209 | Child psychology | 9 | 228 | 1011 | 1342 |
| 209 | government | 15 | 228 | 270 | 329 |
| 211 | gene therapy | 6 | 222 | 1040 | 1171 |
| 212 | Cytogenetics | 2 | 211 | 2397 | 1813 |
| 212 | harm reduction | 6 | 211 | 121 | 98 |
| 214 | Long-Term Care | 7 | 210 | 388 | 509 |
| 214 | Long-term care facilities | 7 | 210 | 385 | 509 |
| 216 | Cardiovascular diseases | 5 | 209 | 1647 | 1212 |
| 217 | Travel | 15 | 206 | 288 | 431 |
| 217 | community participation | 7 | 206 | 56 | 51 |
| 217 | Faculty | 7 | 206 | 56 | 51 |
| 220 | Occupational Therapy | 6 | 204 | 851 | 387 |
| 221 | infection | 6 | 203 | 1571 | 1626 |
| 222 | Visual Perception | 4 | 202 | 2060 | 1585 |
| 222 | Memory | 4 | 202 | 2215 | 1770 |
| 222 | Attention | 4 | 202 | 2152 | 1636 |
| 222 | Perception | 4 | 202 | 2284 | 1761 |
| 226 | Biomedical Engineering | 11 | 201 | 3496 | 4197 |
| 226 | feeding behavior | 6 | 201 | 612 | 631 |
| 226 | drug addiction | 10 | 201 | 746 | 1063 |
| 229 | personality | 4 | 199 | 1403 | 1240 |
| 230 | Antigens | 5 | 198 | 904 | 767 |
| 231 | Anxiety Disorders | 6 | 197 | 404 | 651 |
| 231 | Anxiety | 6 | 197 | 405 | 656 |
| 233 | Substance Abuse | 9 | 191 | 1018 | 1137 |
| 234 | hospice care | 10 | 189 | 271 | 266 |
| 234 | rare diseases | 3 | 189 | 854 | 582 |
| 234 | Cell death | 2 | 189 | 1784 | 1447 |
| 237 | health services accessibility | 3 | 188 | 1211 | 647 |
| 237 | Socioeconomic Factors | 3 | 188 | 940 | 539 |
| 239 | Infections | 3 | 185 | 1603 | 1414 |
| 240 | older people | 8 | 180 | 1218 | 923 |
| 240 | environmental exposure | 3 | 180 | 2457 | 1750 |
| 242 | Pharmacogenetics | 4 | 179 | 1209 | 1120 |
| 242 | Quality of life | 6 | 179 | 1259 | 1402 |
| 244 | Spine | 8 | 178 | 530 | 784 |
| 245 | Parasitic Diseases | 2 | 176 | 3156 | 1946 |
| 246 | pollutants | 1 | 174 | 3527 | 1877 |
| 246 | Environmental pollutants | 1 | 174 | 4162 | 2152 |
| 246 | environmental pollution | 1 | 174 | 7300 | 4488 |
| 246 | Pollution | 1 | 174 | 8671 | 5558 |
| 250 | viruses | 4 | 173 | 1682 | 1828 |
| 251 | Medical Laboratory Science | 4 | 172 | 2298 | 2031 |
| 251 | Antibodies | 4 | 172 | 762 | 633 |
| 253 | Ophthalmology | 8 | 166 | 1445 | 1675 |
| 254 | Neuromuscular diseases | 17 | 161 | 259 | 670 |
| 254 | Muscles | 17 | 161 | 337 | 999 |
| 254 | Liver diseases | 7 | 161 | 1303 | 1945 |
| 257 | Library Science | 2 | 160 | 1932 | 386 |
| 258 | Biomechanics | 9 | 159 | 941 | 1269 |
| 258 | Immunity | 4 | 159 | 2218 | 2757 |
| 260 | Emergency Medical Services | 7 | 158 | 576 | 509 |
| 261 | Clinical Trials | 7 | 157 | 389 | 445 |
| 262 | Medical Technology | 11 | 154 | 1006 | 1645 |
| 262 | Immunotherapy | 5 | 154 | 1893 | 2223 |
| 262 | biological factors | 7 | 154 | 1529 | 1696 |
| 262 | health services | 7 | 154 | 820 | 840 |
| 266 | General Surgery | 6 | 151 | 641 | 543 |
| 266 | North America | 6 | 151 | 715 | 614 |
| 268 | disabilities | 10 | 149 | 379 | 599 |
| 269 | Lymphoma | 21 | 145 | 273 | 221 |
| 269 | Multiple Myeloma | 21 | 145 | 272 | 206 |
| 271 | Smoking | 7 | 143 | 575 | 816 |
| 272 | Europe | 4 | 142 | 3720 | 2635 |
| 273 | risk factors | 3 | 141 | 921 | 742 |
| 274 | Nanotechnology | 2 | 138 | 6523 | 5062 |
| 274 | nanoscience | 2 | 138 | 3937 | 3095 |
| 276 | Depression | 4 | 137 | 340 | 569 |
| 277 | Exercise therapy | 3 | 136 | 472 | 204 |
| 277 | proteins | 4 | 136 | 2402 | 2176 |
| 279 | Brachytherapy | 17 | 134 | 100 | 130 |
| 279 | protein | 3 | 134 | 1573 | 1268 |
| 281 | Herbal medicine | 1 | 132 | 1534 | 804 |
| 282 | health behavior | 5 | 130 | 915 | 989 |
| 282 | Vaccination | 2 | 130 | 415 | 265 |
| 282 | Alzheimer's disease | 11 | 130 | 1011 | 1258 |
| 285 | Pregnancy | 6 | 129 | 686 | 785 |
| 286 | Dietetics | 2 | 127 | 1339 | 623 |
| 286 | Immunohistochemistry | 14 | 127 | 32 | 111 |
| 286 | Drug delivery systems | 1 | 127 | 2888 | 1787 |
| 289 | Hospitals | 9 | 126 | 447 | 658 |
| 290 | Parkinson's disease | 1 | 125 | 541 | 239 |
| 291 | Forensic Psychology | 3 | 124 | 469 | 300 |
| 291 | Forensic Psychiatry | 3 | 124 | 685 | 462 |
| 293 | Lung Transplantation | 3 | 121 | 857 | 585 |
| 293 | Heart transplantation | 3 | 121 | 857 | 585 |
| 293 | Body Image | 2 | 121 | 302 | 252 |
| 296 | Clinical Immunology | 8 | 119 | 1038 | 1504 |
| 297 | Carcinogenesis | 2 | 116 | 1612 | 1411 |
| 298 | air quality management | 2 | 114 | 842 | 561 |
| 298 | Personality Disorders | 1 | 114 | 576 | 313 |
| 298 | Electrophysiology | 3 | 114 | 1509 | 1044 |
| 298 | indoor air pollution | 2 | 114 | 604 | 423 |
| 298 | Ventilation | 2 | 114 | 816 | 488 |
| 298 | Sick building syndrome | 2 | 114 | 604 | 423 |
| 304 | Radiotherapy | 3 | 112 | 537 | 253 |
| 304 | locomotion | 5 | 112 | 628 | 706 |
| 304 | posture | 5 | 112 | 628 | 706 |
| 304 | Speech Disorders | 5 | 112 | 955 | 1002 |
| 304 | gait | 5 | 112 | 628 | 706 |
| 304 | walking | 5 | 112 | 628 | 706 |
| 310 | Social Sciences | 2 | 111 | 5522 | 2724 |
| 310 | violence | 2 | 111 | 1393 | 963 |
| 312 | Technology | 2 | 108 | 6389 | 4127 |
| 313 | Suicide | 4 | 107 | 549 | 551 |
| 314 | Biometrics | 2 | 106 | 1641 | 1106 |
| 315 | Hippocampus | 2 | 104 | 451 | 485 |
| 316 | Cost control | 1 | 103 | 386 | 124 |
| 317 | musculoskeletal system | 1 | 101 | 353 | 174 |
| 318 | Drug design | 2 | 95 | 2651 | 2144 |
| 319 | Australia | 2 | 94 | 3056 | 1832 |
| 320 | Education | 5 | 93 | 3860 | 3089 |
| 320 | biological evolution | 2 | 93 | 3116 | 2998 |
| 322 | Ergonomics | 9 | 92 | 691 | 976 |
| 322 | Decision making | 6 | 92 | 1180 | 1597 |
| 324 | Health Services Administration | 20 | 91 | 313 | 1301 |
| 324 | Crisis Intervention | 3 | 91 | 181 | 184 |
| 326 | Histochemistry | 4 | 90 | 1165 | 1235 |
| 326 | Adolescent Psychology | 2 | 90 | 1269 | 988 |
| 326 | Physical fitness | 2 | 90 | 1550 | 1225 |
| 329 | Communication | 4 | 89 | 2136 | 1871 |
| 329 | Personality Assessment | 3 | 89 | 648 | 743 |
| 331 | Metastasis | 1 | 88 | 501 | 502 |
| 332 | Proteomics | 5 | 85 | 1115 | 1771 |
| 332 | Gastrointestinal diseases | 6 | 85 | 600 | 780 |
| 334 | Signal Transduction | 3 | 84 | 1793 | 2149 |
| 334 | histological techniques | 3 | 84 | 873 | 1170 |
| 334 | Autoimmunity | 2 | 84 | 1182 | 1264 |
| 337 | Post-traumatic stress disorder | 2 | 83 | 1146 | 1029 |
| 338 | Flow cytometry | 2 | 82 | 696 | 583 |
| 338 | Digestive system diseases | 7 | 82 | 818 | 1345 |
| 340 | Molecular Imaging | 1 | 79 | 1378 | 1073 |
| 340 | Hormones | 2 | 79 | 2006 | 1928 |
| 342 | child abuse | 1 | 75 | 1708 | 1219 |
| 343 | Medical Ethics | 9 | 74 | 689 | 1124 |
| 343 | brain mapping | 1 | 74 | 1273 | 1131 |
| 345 | chronic disease | 2 | 71 | 580 | 509 |
| 346 | Health insurance | 2 | 70 | 723 | 651 |
| 347 | Social work | 3 | 69 | 1820 | 1441 |
| 348 | tomography | 6 | 68 | 294 | 466 |
| 349 | Andrology | 2 | 67 | 1034 | 901 |
| 349 | Immunogenetics | 2 | 67 | 1183 | 1094 |
| 351 | Cybernetics | 2 | 65 | 1934 | 1636 |
| 351 | Social Psychology | 4 | 65 | 2170 | 2773 |
| 353 | Counseling Psychology | 1 | 64 | 474 | 333 |
| 353 | Pharmacogenomics | 2 | 64 | 531 | 591 |
| 353 | anesthesia | 6 | 64 | 474 | 502 |
| 356 | peer review | 2 | 63 | 117 | 64 |
| 356 | Proteome | 3 | 63 | 1568 | 2146 |
| 356 | scholarly publishing | 2 | 63 | 194 | 135 |
| 359 | Cytoskeleton | 3 | 62 | 347 | 488 |
| 359 | scientific societies | 3 | 62 | 1050 | 1254 |
| 361 | Nuclear Physics | 3 | 61 | 4556 | 4200 |
| 361 | Statistical physics | 2 | 61 | 4655 | 3929 |
| 363 | Feasibility studies | 12 | 60 | 96 | 210 |
| 363 | Dementia | 10 | 60 | 1050 | 1516 |
| 363 | transport vesicles | 1 | 60 | 573 | 778 |
| 363 | Drug discovery | 1 | 60 | 703 | 472 |
| 367 | Molecular Genetics | 2 | 58 | 3011 | 3344 |
| 367 | embryonic development | 2 | 58 | 666 | 717 |
| 369 | Global Health | 2 | 56 | 1812 | 1383 |
| 369 | Antiviral agents | 2 | 56 | 568 | 601 |
| 371 | drug evaluation | 2 | 55 | 2069 | 2082 |
| 372 | Cognitive Therapy | 4 | 54 | 610 | 910 |
| 372 | cell interaction | 1 | 54 | 2344 | 2101 |
| 372 | Microscopy | 1 | 54 | 3363 | 2007 |
| 375 | Sports Medicine | 7 | 53 | 2178 | 3074 |
| 375 | Enteral nutrition | 4 | 53 | 1031 | 1704 |
| 375 | drug development | 4 | 53 | 1152 | 2451 |
| 375 | Immune system | 1 | 53 | 2145 | 2084 |
| 379 | Health promotion | 6 | 52 | 1331 | 2375 |
| 380 | Sexual health | 9 | 51 | 489 | 1017 |
| 381 | Qualitative Research | 2 | 50 | 712 | 655 |
| 381 | Bacterial infections | 4 | 50 | 984 | 1904 |
| 381 | liver | 2 | 50 | 511 | 545 |
| 384 | Malaria | 3 | 49 | 936 | 1268 |
| 384 | Opioids | 1 | 49 | 200 | 64 |
| 384 | sex differences | 1 | 49 | 353 | 308 |
| 384 | traffic safety | 2 | 49 | 476 | 445 |
| 388 | Mathematics | 4 | 47 | 6267 | 6029 |
| 388 | Bioethics | 5 | 47 | 805 | 1161 |
| 388 | preimplantation genetic diagnosis | 3 | 47 | 590 | 791 |
| 388 | embryo transfer | 3 | 47 | 613 | 817 |
| 388 | Host-parasite interactions | 2 | 47 | 1942 | 2773 |
| 388 | Virulence | 2 | 47 | 1764 | 2628 |
| 394 | Endocrine system | 5 | 46 | 858 | 535 |
| 395 | Neonatal Nursing | 3 | 45 | 150 | 87 |
| 395 | Neonatal intensive care | 3 | 45 | 115 | 73 |
| 395 | Genetic disorders | 2 | 45 | 823 | 983 |
| 395 | monitoring | 4 | 45 | 267 | 381 |
| 399 | ovary | 3 | 44 | 237 | 410 |
| 400 | Geriatric Pharmacology | 2 | 43 | 484 | 671 |
| 400 | Elderly | 5 | 43 | 1225 | 1301 |
| 400 | cell membrane | 2 | 43 | 895 | 1087 |
| 400 | dissociative disorders | 1 | 43 | 253 | 218 |
| 404 | Angst | 1 | 42 | 58 | 67 |
| 405 | Anthropology | 1 | 41 | 3275 | 2040 |
| 405 | Ethnobotany | 1 | 41 | 506 | 505 |
| 405 | Traditional medicine | 1 | 41 | 697 | 601 |
| 405 | ethnobiology | 1 | 41 | 566 | 552 |
| 405 | Phytotherapy | 1 | 41 | 1812 | 1649 |
| 405 | Bones | 2 | 41 | 1450 | 1781 |
| 405 | Ethnomedicine | 1 | 41 | 402 | 493 |
| 412 | Amyotrophic Lateral Sclerosis | 2 | 40 | 403 | 552 |
| 413 | Histology | 3 | 39 | 2392 | 3375 |
| 413 | Forensic Genetics | 1 | 39 | 540 | 505 |
| 413 | pharmaceutical industry | 3 | 39 | 701 | 960 |
| 416 | Social support | 3 | 38 | 200 | 420 |
| 416 | cytokines | 2 | 38 | 2067 | 2627 |
| 416 | Social environment | 3 | 38 | 244 | 477 |
| 416 | Growth factors | 2 | 38 | 431 | 890 |
| 416 | Cytokine | 2 | 38 | 659 | 1058 |
| 421 | Criminology | 2 | 37 | 1275 | 1187 |
| 422 | Antibacterial agents | 3 | 36 | 920 | 1677 |
| 422 | Public opinion | 1 | 36 | 858 | 804 |
| 424 | Photonics | 2 | 35 | 2365 | 2812 |
| 424 | Psychoanalysis | 1 | 35 | 838 | 373 |
| 424 | psychoanalytic therapy | 1 | 35 | 252 | 93 |
| 424 | Hearing | 3 | 35 | 831 | 1146 |
| 424 | Spectrum analysis | 2 | 35 | 5786 | 6227 |
| 429 | Public Policy | 2 | 34 | 2760 | 3336 |
| 429 | Behavioral research | 1 | 34 | 1193 | 766 |
| 429 | urban health | 2 | 34 | 436 | 666 |
| 429 | Hearing Aids | 2 | 34 | 337 | 334 |
| 433 | Respiratory Infections | 1 | 33 | 862 | 793 |
| 433 | Influenza | 1 | 33 | 709 | 674 |
| 435 | Audiology | 2 | 31 | 1191 | 1425 |
| 435 | Biopharmaceutics | 1 | 31 | 2524 | 2470 |
| 435 | patient satisfaction | 4 | 31 | 97 | 132 |
| 438 | Language Disorders | 3 | 30 | 997 | 1432 |
| 438 | Microfabrication | 1 | 30 | 879 | 750 |
| 438 | adolescence | 1 | 30 | 1815 | 1745 |
| 441 | Radiation Oncology | 2 | 29 | 617 | 882 |
| 441 | Educational Technology | 1 | 29 | 3053 | 2539 |
| 443 | Ethics | 4 | 28 | 992 | 1617 |
| 443 | Optics | 1 | 28 | 7550 | 5619 |
| 443 | Photography | 1 | 28 | 3467 | 1262 |
| 446 | Pediatric Hematology | 1 | 27 | 905 | 665 |
| 446 | epilepsy | 5 | 27 | 966 | 2049 |
| 446 | Contraception | 1 | 27 | 1380 | 1462 |
| 446 | Reproductive health | 1 | 27 | 1723 | 1733 |
| 446 | Birth control | 1 | 27 | 1049 | 1159 |
| 451 | Radiation | 3 | 25 | 2789 | 3732 |
| 451 | Parasitology | 1 | 25 | 4234 | 4170 |
| 451 | Developmental Immunology | 2 | 25 | 1253 | 1874 |
| 451 | Sexuality | 1 | 25 | 691 | 573 |
| 451 | Tropical Medicine | 5 | 25 | 1896 | 3576 |
| 451 | Menopause | 1 | 25 | 738 | 781 |
| 457 | Materials Science | 1 | 24 | 7586 | 7038 |
| 457 | Pharmacognosy | 1 | 24 | 3365 | 3793 |
| 457 | Emergency Nursing | 2 | 24 | 248 | 364 |
| 457 | Computational Biology | 2 | 24 | 4608 | 5532 |
| 457 | Medicinal plants | 1 | 24 | 2807 | 3128 |
| 457 | Materials | 1 | 24 | 8893 | 8452 |
| 457 | Neurons | 1 | 24 | 1332 | 1904 |
| 464 | Environmental Psychology | 1 | 23 | 758 | 1002 |
| 464 | Familial diseases | 1 | 23 | 583 | 602 |
| 466 | Intellectual disability | 1 | 22 | 1773 | 1724 |
| 467 | Chronobiology | 1 | 21 | 941 | 935 |
| 467 | Mobile Computing | 1 | 21 | 2283 | 1811 |
| 467 | Community Psychology | 1 | 21 | 1165 | 1279 |
| 467 | Human-Computer Interaction | 1 | 21 | 2997 | 2997 |
| 467 | Circadian rhythms | 1 | 21 | 684 | 827 |
| 467 | biological clocks | 1 | 21 | 941 | 935 |
| 467 | circadian rhythm | 1 | 21 | 941 | 935 |
| 467 | biological rhythms | 1 | 21 | 898 | 918 |
| 467 | Jurisprudence | 2 | 21 | 1439 | 1790 |
| 476 | Community Psychiatry | 1 | 20 | 2238 | 2501 |
| 476 | speech therapy | 1 | 20 | 829 | 844 |
| 476 | cosmic rays | 2 | 20 | 736 | 954 |
| 476 | Entropy | 1 | 20 | 2199 | 1972 |
| 476 | Communication Disorders | 1 | 20 | 715 | 660 |
| 476 | Psychiatric hospitals | 1 | 20 | 723 | 696 |
| 476 | Cognition | 2 | 20 | 2383 | 3331 |
| 483 | Clinical Laboratory Science | 1 | 19 | 643 | 636 |
| 483 | Genetic engineering | 2 | 19 | 3297 | 4794 |
| 483 | Genetic regulation | 2 | 19 | 1834 | 2825 |
| 483 | cloning | 2 | 19 | 1064 | 1917 |
| 487 | Systems Engineering | 1 | 18 | 3990 | 3554 |
| 487 | Statistics | 1 | 18 | 4731 | 4146 |
| 487 | Image Processing | 1 | 18 | 3646 | 3791 |
| 487 | Cognitive Science | 1 | 18 | 2870 | 3233 |
| 487 | Social welfare | 1 | 18 | 1318 | 1325 |
| 487 | Osteoporosis | 1 | 18 | 882 | 1074 |
| 487 | Imaging systems | 1 | 18 | 1680 | 1410 |
| 494 | Computer Vision | 1 | 17 | 2201 | 2546 |
| 494 | nursing ethics | 1 | 17 | 563 | 728 |
| 496 | Diagnosis | 2 | 16 | 1009 | 1595 |
| 496 | Bioinorganic chemistry | 1 | 16 | 2514 | 2925 |
| 496 | Patient Safety | 2 | 16 | 140 | 237 |
| 496 | Pancreatic diseases | 1 | 16 | 1112 | 951 |
| 500 | Engineering | 1 | 15 | 8385 | 7896 |
| 500 | Computer Science | 1 | 15 | 4291 | 3972 |
| 500 | Genetic Counseling | 2 | 15 | 490 | 809 |
| 500 | Developmental Psychology | 1 | 15 | 1957 | 2313 |
| 500 | Frontotemporal lobar degeneration | 1 | 15 | 461 | 608 |
| 500 | Food | 1 | 15 | 5572 | 6465 |
| 500 | human development | 1 | 15 | 1456 | 1813 |
| 500 | disease outbreaks | 1 | 15 | 1248 | 1723 |
| 500 | Epidemics | 1 | 15 | 1171 | 1684 |
| 500 | Appetite | 1 | 15 | 1390 | 1833 |
| 510 | War | 1 | 14 | 512 | 565 |
| 510 | warfare | 1 | 14 | 634 | 861 |
| 510 | refugees | 1 | 14 | 591 | 665 |
| 510 | sports injuries | 3 | 14 | 671 | 1372 |
| 514 | Neurogenetics | 1 | 13 | 758 | 1023 |
| 514 | Lipid metabolism | 1 | 13 | 946 | 1424 |
| 514 | Lipid | 1 | 13 | 951 | 1428 |
| 514 | Prisons | 1 | 13 | 662 | 675 |
| 518 | Bioengineering | 2 | 12 | 6239 | 8844 |
| 518 | Pharmaceutical Technology | 2 | 12 | 2185 | 3539 |
| 518 | Erectile dysfunction | 1 | 12 | 609 | 761 |
| 518 | transgenic organisms | 1 | 12 | 657 | 1012 |
| 518 | Plant genetic engineering | 1 | 12 | 1777 | 2258 |
| 518 | Quality Assurance | 1 | 12 | 984 | 1172 |
| 518 | transgenic animals | 1 | 12 | 622 | 978 |
| 518 | Antioxidants | 1 | 12 | 1567 | 2292 |
| 518 | Chromosome mapping | 2 | 12 | 2915 | 4855 |
| 518 | Transgenic plants | 1 | 12 | 1047 | 1511 |
| 518 | breastfeeding | 3 | 12 | 641 | 1585 |
| 518 | Safety management | 2 | 12 | 984 | 1705 |
| 518 | gene mapping | 2 | 12 | 3173 | 5207 |
| 518 | Oxidation-reduction | 1 | 12 | 1609 | 2384 |
| 532 | Psychiatric Nursing | 2 | 11 | 1007 | 1725 |
| 532 | Dyslexia | 1 | 11 | 327 | 467 |
| 532 | Cardiopulmonary Resuscitation | 1 | 11 | 419 | 374 |
| 532 | cardiac arrest | 1 | 11 | 419 | 374 |
| 532 | ethanol | 1 | 11 | 1128 | 1498 |
| 537 | Operations Research | 1 | 10 | 3744 | 4045 |
| 537 | management | 1 | 10 | 5999 | 6633 |
| 537 | Speech | 2 | 10 | 1277 | 2138 |
| 540 | Total Quality Management | 1 | 9 | 1201 | 1664 |
| 540 | Cross-Cultural Studies | 1 | 9 | 1499 | 1945 |
| 540 | Globalization | 1 | 9 | 1244 | 1725 |
| 540 | Asia | 1 | 9 | 5695 | 6116 |
| 540 | cross-cultural comparison | 1 | 9 | 1210 | 1637 |
| 540 | biomedicine | 1 | 9 | 2045 | 2879 |
| 540 | Information Science | 1 | 9 | 4777 | 5602 |
| 540 | Criminal investigation | 3 | 9 | 225 | 587 |
| 540 | international cooperation | 1 | 9 | 1332 | 1803 |
| 549 | Pastoral Theology | 2 | 8 | 214 | 186 |
| 549 | drug control | 1 | 8 | 824 | 1253 |
| 551 | medical errors | 2 | 7 | 101 | 380 |
| 551 | Laser therapy | 1 | 7 | 963 | 1211 |
| 551 | Hemophilia | 2 | 7 | 782 | 1347 |
| 551 | Communication in medicine | 2 | 7 | 777 | 1698 |
| 551 | sociological factors | 1 | 7 | 84 | 72 |
| 551 | safety | 2 | 7 | 134 | 491 |
| 551 | Adipose tissue | 1 | 7 | 212 | 451 |
| 551 | sexual behavior | 1 | 7 | 1380 | 2004 |
| 559 | Analytical Chemistry | 1 | 6 | 7236 | 8893 |
| 559 | Music Therapy | 1 | 6 | 540 | 811 |
| 559 | Systems Analysis | 2 | 6 | 1631 | 3098 |
| 559 | Music | 1 | 6 | 1937 | 2024 |
| 559 | Leadership | 3 | 6 | 548 | 1492 |
| 559 | Histocompatibility Testing | 4 | 6 | 638 | 1753 |
| 559 | Chemical analysis | 1 | 6 | 2295 | 3252 |
| 559 | Pituitary gland | 1 | 6 | 491 | 806 |
| 559 | Consciousness | 2 | 6 | 677 | 1301 |
| 568 | Cochlear Implants | 1 | 5 | 243 | 379 |
| 568 | Pediatric Rheumatology | 1 | 5 | 580 | 862 |
| 568 | Forensic Pathology | 1 | 5 | 382 | 581 |
| 568 | Analytical Biochemistry | 1 | 5 | 3430 | 4816 |
| 568 | Maternal health services | 1 | 5 | 1007 | 1653 |
| 568 | Neural circuitry | 1 | 5 | 3411 | 4603 |
| 568 | Child welfare | 1 | 5 | 2335 | 3273 |
| 568 | disease vectors | 1 | 5 | 1965 | 2960 |
| 568 | Imagination | 1 | 5 | 203 | 300 |
| 568 | Zoonoses | 1 | 5 | 734 | 1321 |
| 578 | Pharmacy | 1 | 4 | 4217 | 5719 |
| 578 | Neonatology | 1 | 4 | 1461 | 2270 |
| 578 | Evolutionary Genetics | 1 | 4 | 1567 | 2511 |
| 578 | Molecular Epidemiology | 1 | 4 | 1567 | 2511 |
| 578 | Professional ethics | 1 | 4 | 659 | 1239 |
| 578 | Societies | 1 | 4 | 417 | 549 |
| 584 | Paleontology | 1 | 3 | 2240 | 2946 |
| 584 | Pediatric Ophthalmology | 1 | 3 | 142 | 239 |
| 584 | Photochemistry | 1 | 3 | 3339 | 4785 |
| 584 | Strabismus | 1 | 3 | 142 | 239 |
| 584 | Paleopathology | 1 | 3 | 657 | 972 |
| 584 | Light | 1 | 3 | 1979 | 3011 |
| 584 | animal diseases | 1 | 3 | 1044 | 1834 |
| 584 | probabilities | 1 | 3 | 2173 | 2630 |
| 592 | Immunohematology | 2 | 2 | 211 | 516 |
| 592 | Organ transplantation | 1 | 2 | 862 | 1314 |
| 592 | visualization | 2 | 2 | 2533 | 3737 |
| 592 | Cerebellum | 1 | 2 | 691 | 1228 |
| 592 | Cerebellar ataxia | 1 | 2 | 691 | 1228 |
| 597 | Data Mining | 1 | 1 | 3570 | 5660 |
| 597 | Occupational Health | 1 | 1 | 2586 | 3918 |
| 597 | Special Education | 2 | 1 | 1158 | 2335 |
| 597 | Serology | 1 | 1 | 1175 | 1995 |
| 597 | Crime prevention | 1 | 1 | 630 | 1061 |
| 597 | Systems Biology | 1 | 1 | 3266 | 5138 |
| 597 | School Psychology | 1 | 1 | 904 | 1591 |
| 597 | Databases | 1 | 1 | 727 | 1214 |
| 597 | Educational Psychology | 2 | 1 | 1946 | 3856 |
| 597 | Signal Processing | 1 | 1 | 3527 | 5080 |
| 597 | emergency management | 1 | 1 | 1923 | 3393 |
| 597 | Electrocardiography | 1 | 1 | 959 | 1432 |
| 597 | Bioinformatics | 1 | 1 | 3992 | 5799 |
| 597 | Retinal diseases | 1 | 1 | 190 | 298 |
| 597 | big data | 1 | 1 | 1254 | 2215 |
| 597 | Blood group antigens | 1 | 1 | 222 | 417 |
| 597 | Mitochondria | 1 | 1 | 810 | 1407 |
| 597 | school psychologists | 1 | 1 | 402 | 761 |
| 597 | venom | 1 | 1 | 1861 | 2672 |
| 597 | Toxins | 1 | 1 | 2011 | 2889 |
| 597 | Genes | 1 | 1 | 2359 | 3721 |
| 618 | Law | 1 | 0 | 2912 | 3783 |
| 618 | Comparative Physiology | 1 | 0 | 1583 | 2353 |
| 618 | Industrial Safety | 1 | 0 | 2552 | 4191 |
| 618 | Data Science | 3 | 0 | 219 | 419 |
| 618 | Evidence-based practice | 2 | 0 | 198 | 455 |
| 618 | Electrochemistry | 1 | 0 | 5741 | 7390 |
| 618 | Fluorescence spectroscopy | 1 | 0 | 630 | 1155 |
| 618 | Molecular Spectroscopy | 1 | 0 | 3169 | 4686 |
| 618 | Sports | 1 | 0 | 3730 | 4977 |
| 618 | Hypertension in pregnancy | 1 | 0 | 697 | 1100 |
| 618 | Population | 3 | 0 | 1284 | 3668 |
| 618 | Developing countries | 1 | 0 | 4840 | 7269 |
