| 1 | Science | 40 | 4.4K | 4524 | 3218 |
| 2 | Biology | 13 | 3.9K | 7165 | 3242 |
| 3 | Physics | 7 | 3.6K | 8497 | 3454 |
| 4 | Natural history | 2 | 3.4K | 6263 | 2266 |
| 5 | Medicine | 66 | 2.8K | 3409 | 3237 |
| 6 | Cancer | 20 | 1.0K | 1999 | 1816 |
| 7 | Hematology | 67 | 970 | 1153 | 1485 |
| 8 | Research | 41 | 920 | 3637 | 4314 |
| 9 | Oncology | 5 | 874 | 2307 | 1567 |
| 10 | Endocrinology | 37 | 858 | 1135 | 1716 |
| 11 | Microbiology | 30 | 794 | 3063 | 3817 |
| 12 | Molecular Biology | 22 | 710 | 4511 | 5014 |
| 13 | Critical Care Medicine | 39 | 671 | 443 | 1119 |
| 14 | Metabolism | 34 | 593 | 1116 | 1878 |
| 15 | Psychiatry | 18 | 586 | 2425 | 2530 |
| 16 | Diabetes | 20 | 568 | 1107 | 1542 |
| 17 | Human genetics | 9 | 567 | 1801 | 2763 |
| 18 | Diagnostic Imaging | 15 | 553 | 1054 | 920 |
| 19 | Critical Care | 14 | 548 | 973 | 1256 |
| 20 | Lung Transplantation | 17 | 502 | 339 | 273 |
| 20 | Heart transplantation | 17 | 502 | 339 | 273 |
| 22 | blood transfusion | 4 | 492 | 878 | 282 |
| 23 | Diabetes mellitus | 13 | 478 | 1337 | 1619 |
| 24 | Clinical Chemistry | 22 | 469 | 1351 | 1860 |
| 25 | Biochemistry | 18 | 440 | 5557 | 6016 |
| 26 | Proteome | 5 | 438 | 1140 | 766 |
| 26 | proteins | 5 | 438 | 2156 | 1176 |
| 28 | Metabolic diseases | 26 | 418 | 1047 | 1989 |
| 29 | Australia | 36 | 365 | 411 | 722 |
| 30 | Chemistry | 14 | 358 | 6633 | 7428 |
| 31 | Allergy | 6 | 336 | 1162 | 1303 |
| 32 | Liver diseases | 7 | 332 | 1301 | 1447 |
| 33 | Nutrition | 13 | 314 | 2884 | 3324 |
| 34 | Surgery | 19 | 304 | 1098 | 2005 |
| 35 | Medical genetics | 12 | 270 | 2055 | 2877 |
| 36 | Orthopedics | 16 | 266 | 844 | 1178 |
| 37 | Public Health | 10 | 253 | 4416 | 4764 |
| 38 | Randomized Controlled Trials | 15 | 248 | 522 | 547 |
| 39 | Immunity | 2 | 246 | 2894 | 2375 |
| 40 | Obstetrics | 8 | 227 | 2212 | 2006 |
| 41 | Hypertension | 6 | 225 | 1569 | 1976 |
| 41 | Pregnancy | 2 | 225 | 1374 | 529 |
| 43 | Cytology | 3 | 224 | 5245 | 4356 |
| 44 | Health Policy | 2 | 199 | 3761 | 1916 |
| 45 | Environment | 6 | 187 | 4761 | 6167 |
| 46 | Immunology | 14 | 186 | 2497 | 3869 |
| 47 | Antibacterial agents | 11 | 182 | 299 | 655 |
| 48 | drug resistance | 4 | 181 | 714 | 596 |
| 49 | Obesity | 13 | 177 | 1219 | 2241 |
| 50 | Genomics | 12 | 171 | 2193 | 3413 |
| 51 | Diet | 6 | 162 | 1986 | 2465 |
| 52 | Cell Biology | 5 | 161 | 4239 | 4761 |
| 53 | Epidemiology | 8 | 157 | 3206 | 3872 |
| 54 | Medical Oncology | 5 | 156 | 2176 | 2105 |
| 54 | Clinical Biochemistry | 5 | 156 | 1330 | 1181 |
| 56 | Cardiovascular system | 3 | 154 | 2089 | 2325 |
| 57 | Rheumatology | 16 | 151 | 615 | 1401 |
| 58 | Medical Microbiology | 14 | 145 | 1419 | 2955 |
| 59 | Radiobiology | 4 | 144 | 2100 | 1655 |
| 59 | diseases | 1 | 144 | 823 | 1000 |
| 59 | Disease | 1 | 144 | 826 | 979 |
| 62 | Computer Vision | 1 | 142 | 2226 | 1260 |
| 62 | Image Processing | 1 | 142 | 3705 | 1854 |
| 64 | Geriatrics | 13 | 141 | 1902 | 2825 |
| 65 | Sports Medicine | 15 | 139 | 1433 | 2092 |
| 65 | Respiration | 5 | 139 | 1522 | 1712 |
| 67 | arthritis | 12 | 137 | 842 | 1717 |
| 68 | Mental Disorders | 7 | 135 | 2710 | 3498 |
| 69 | Long-Term Care | 4 | 130 | 551 | 672 |
| 69 | Long-term care facilities | 4 | 130 | 547 | 671 |
| 69 | United States | 4 | 130 | 6364 | 4976 |
| 72 | Biophysics | 9 | 123 | 4742 | 6058 |
| 73 | Dermatology | 6 | 120 | 1713 | 1842 |
| 74 | Physiology | 6 | 116 | 4076 | 4850 |
| 75 | Genetics | 2 | 115 | 5888 | 5167 |
| 76 | infection | 8 | 113 | 1293 | 2142 |
| 77 | Clinical Immunology | 7 | 112 | 1079 | 1537 |
| 78 | Aging | 11 | 111 | 2014 | 3102 |
| 79 | Hemodynamics | 3 | 104 | 798 | 1050 |
| 79 | Mobile genetic elements | 1 | 104 | 223 | 112 |
| 79 | DNA | 1 | 104 | 1384 | 595 |
| 82 | Leukemia | 6 | 97 | 1201 | 1548 |
| 83 | Parasitic Diseases | 6 | 96 | 1910 | 2588 |
| 84 | Infections | 5 | 92 | 1198 | 1907 |
| 85 | Dietetics | 4 | 90 | 895 | 784 |
| 86 | Food | 3 | 89 | 3901 | 3959 |
| 87 | Psychology | 4 | 88 | 5724 | 5731 |
| 88 | Medical innovations | 1 | 87 | 2233 | 2309 |
| 88 | drug development | 1 | 87 | 2314 | 2139 |
| 90 | Asia | 11 | 86 | 1623 | 2541 |
| 90 | Europe | 9 | 86 | 2364 | 3412 |
| 92 | Materials | 1 | 85 | 8934 | 6361 |
| 92 | Optical materials | 1 | 85 | 4087 | 3222 |
| 92 | genome | 1 | 85 | 3238 | 2708 |
| 95 | Nuclear Medicine | 4 | 84 | 1205 | 1300 |
| 95 | Photonics | 5 | 84 | 1597 | 2160 |
| 95 | Molecular Imaging | 3 | 84 | 869 | 1039 |
| 98 | Spectrum analysis | 4 | 83 | 4628 | 4932 |
| 99 | calcification | 2 | 82 | 844 | 827 |
| 100 | Stem cells | 1 | 81 | 3025 | 2356 |
| 100 | Tropical Medicine | 1 | 81 | 3790 | 2158 |
| 102 | Ecology | 2 | 80 | 8735 | 8675 |
| 103 | Sports | 10 | 79 | 1368 | 2028 |
| 103 | Thorax | 1 | 79 | 1075 | 842 |
| 105 | Infection control | 2 | 77 | 1143 | 1016 |
| 106 | Bones | 2 | 75 | 1432 | 1443 |
| 107 | sports injuries | 5 | 72 | 470 | 611 |
| 108 | Mental illness | 2 | 71 | 3166 | 3240 |
| 109 | Virology | 5 | 70 | 3185 | 4962 |
| 110 | Melanoma | 2 | 69 | 351 | 407 |
| 111 | Histocompatibility Testing | 7 | 68 | 423 | 725 |
| 112 | Environmental Health | 2 | 67 | 7777 | 7830 |
| 113 | Transplantation | 11 | 65 | 843 | 1965 |
| 113 | pain | 2 | 65 | 2210 | 2222 |
| 115 | software | 3 | 63 | 1178 | 1535 |
| 116 | Amyotrophic Lateral Sclerosis | 2 | 62 | 396 | 443 |
| 116 | Frontotemporal lobar degeneration | 2 | 62 | 309 | 320 |
| 118 | Audiology | 1 | 61 | 1525 | 1099 |
| 119 | personality | 1 | 59 | 2551 | 2111 |
| 119 | Lipids | 2 | 59 | 2065 | 2346 |
| 121 | Environmental Engineering | 1 | 58 | 6995 | 5627 |
| 121 | Environmental Policy | 1 | 58 | 6172 | 5416 |
| 121 | Environmental Law | 1 | 58 | 2305 | 2330 |
| 121 | environmental protection | 1 | 58 | 6565 | 5413 |
| 121 | Environmental monitoring | 1 | 58 | 6696 | 5988 |
| 126 | Geriatric Psychiatry | 3 | 57 | 1418 | 1817 |
| 126 | Immunopathology | 5 | 57 | 1392 | 2259 |
| 128 | Diagnostic microbiology | 3 | 56 | 1721 | 2792 |
| 129 | Dementia | 1 | 52 | 2702 | 1656 |
| 129 | Alzheimer's disease | 1 | 52 | 2773 | 1807 |
| 131 | Exercise | 6 | 49 | 1065 | 1759 |
| 132 | Neurobiology | 1 | 48 | 3284 | 3173 |
| 132 | Neurophysiology | 1 | 48 | 4994 | 4677 |
| 132 | drug therapy | 6 | 48 | 2254 | 3934 |
| 135 | Emergency Medicine | 4 | 46 | 1847 | 2323 |
| 136 | Hemophilia | 2 | 44 | 775 | 737 |
| 137 | Pharmaceutical Chemistry | 2 | 43 | 5513 | 5926 |
| 137 | Gerontology | 5 | 43 | 1958 | 2803 |
| 137 | Hospitals | 1 | 43 | 1686 | 1282 |
| 140 | Emergency Medical Services | 2 | 42 | 1326 | 1356 |
| 141 | Radiology | 10 | 40 | 1138 | 2351 |
| 141 | Immunotherapy | 2 | 40 | 2830 | 3537 |
| 141 | preventive medicine | 2 | 40 | 2142 | 2630 |
| 141 | Kidney diseases | 2 | 40 | 1535 | 1790 |
| 145 | Congenital heart disease | 4 | 38 | 60 | 52 |
| 146 | Child | 4 | 37 | 2912 | 4051 |
| 146 | Adolescent | 4 | 37 | 2489 | 3566 |
| 148 | Psychosomatic Medicine | 1 | 36 | 1779 | 1774 |
| 149 | Endocrine system | 9 | 35 | 546 | 633 |
| 150 | Nursing | 2 | 34 | 2951 | 2876 |
| 150 | Pediatric Dermatology | 2 | 34 | 738 | 794 |
| 152 | Primary health care | 4 | 33 | 2008 | 3385 |
| 152 | Mental Health Services | 4 | 33 | 1402 | 2362 |
| 152 | Ultrasonography | 8 | 33 | 11 | 83 |
| 155 | Chemotherapy | 5 | 32 | 1541 | 2935 |
| 155 | Respiratory system | 1 | 32 | 1293 | 1403 |
| 157 | Signal Transduction | 1 | 30 | 2651 | 2921 |
| 157 | Evidence-Based Medicine | 1 | 30 | 2777 | 2425 |
| 157 | Antioxidants | 1 | 30 | 1556 | 1908 |
| 157 | Oxidation-reduction | 1 | 30 | 1609 | 2071 |
| 161 | Cochlear Implants | 2 | 29 | 157 | 157 |
| 162 | Biotechnology | 5 | 28 | 6239 | 10228 |
| 162 | Medical Technology | 1 | 28 | 4090 | 3874 |
| 162 | Pediatrics | 4 | 28 | 3006 | 5167 |
| 162 | Health Services Research | 2 | 28 | 2823 | 3488 |
| 162 | disabilities | 2 | 28 | 1178 | 1529 |
| 162 | medical education | 2 | 28 | 3111 | 3491 |
| 162 | rehabilitation | 2 | 28 | 3425 | 4219 |
| 169 | Analytical Chemistry | 1 | 27 | 7266 | 7153 |
| 169 | Artificial Intelligence | 1 | 27 | 6521 | 5808 |
| 169 | Neural circuitry | 1 | 27 | 3503 | 3636 |
| 169 | Geriatric Oncology | 1 | 27 | 1340 | 1500 |
| 169 | Chromosome mapping | 2 | 27 | 2907 | 4195 |
| 169 | gene mapping | 2 | 27 | 3162 | 4563 |
| 175 | Statistics | 1 | 26 | 4785 | 3794 |
| 175 | gene therapy | 2 | 26 | 1792 | 2671 |
| 175 | Biometrics | 1 | 26 | 2137 | 1924 |
| 175 | Genetic therapy | 2 | 26 | 1943 | 2864 |
| 179 | Cardiovascular diseases | 3 | 25 | 2113 | 3067 |
| 180 | Atherosclerosis | 2 | 23 | 265 | 568 |
| 181 | Education | 1 | 22 | 7465 | 5745 |
| 181 | Biomedical Engineering | 9 | 22 | 3963 | 8944 |
| 181 | Optics | 4 | 22 | 5089 | 6067 |
| 181 | Microbial Ecology | 1 | 22 | 4215 | 5223 |
| 181 | Orthopedic Surgery | 2 | 22 | 1357 | 1874 |
| 181 | Osteoporosis | 3 | 22 | 431 | 1001 |
| 181 | Bone diseases | 3 | 22 | 590 | 1353 |
| 181 | Digestive system diseases | 1 | 22 | 2001 | 2217 |
| 189 | Otolaryngology | 2 | 21 | 968 | 1324 |
| 189 | Bipolar Disorder | 1 | 21 | 768 | 946 |
| 191 | Vaccines | 1 | 20 | 3669 | 4219 |
| 192 | Clinical Psychology | 1 | 19 | 2844 | 3292 |
| 192 | Health Education | 2 | 19 | 3104 | 4224 |
| 192 | Patient education | 2 | 19 | 988 | 1772 |
| 192 | counseling | 2 | 19 | 2056 | 2808 |
| 196 | Nephrology | 1 | 18 | 1247 | 1585 |
| 197 | Emergency Nursing | 3 | 17 | 170 | 444 |
| 197 | health services | 3 | 17 | 1414 | 2729 |
| 199 | Pharmacology | 2 | 16 | 7667 | 10039 |
| 199 | Neurology | 10 | 16 | 4161 | 9574 |
| 199 | Medical Laboratory Science | 4 | 16 | 2293 | 4922 |
| 199 | Andrology | 1 | 16 | 1400 | 1681 |
| 199 | Clinical Pharmacology | 1 | 16 | 2960 | 3408 |
| 199 | Evolution | 1 | 16 | 3605 | 4252 |
| 199 | liver | 2 | 16 | 506 | 971 |
| 206 | Physical Therapy | 1 | 15 | 2699 | 3166 |
| 206 | behavioral medicine | 2 | 15 | 2101 | 3781 |
| 206 | Spine | 1 | 15 | 1420 | 1826 |
| 206 | lasers | 2 | 15 | 2818 | 3339 |
| 210 | Immunogenetics | 1 | 14 | 1544 | 1919 |
| 211 | Urology | 4 | 13 | 2101 | 3932 |
| 211 | health behavior | 1 | 13 | 2116 | 2762 |
| 211 | Health promotion | 1 | 13 | 3251 | 3857 |
| 214 | Pharmacogenetics | 1 | 12 | 2241 | 3013 |
| 214 | epilepsy | 1 | 12 | 2016 | 2584 |
| 214 | Thrombosis | 2 | 12 | 1728 | 2776 |
| 214 | Carcinogenesis | 1 | 12 | 2094 | 2886 |
| 214 | Molecular evolution | 1 | 12 | 3365 | 4337 |
| 214 | Biomarkers | 1 | 12 | 1069 | 1425 |
| 214 | Autoantibodies | 1 | 12 | 1243 | 1779 |
| 214 | Autoimmunity | 1 | 12 | 1519 | 2168 |
| 214 | carcinogens | 1 | 12 | 2096 | 2860 |
| 214 | mutagens | 1 | 12 | 1701 | 2420 |
| 214 | Autoimmune diseases | 1 | 12 | 1359 | 1910 |
| 214 | prostaglandins | 1 | 12 | 970 | 1335 |
| 214 | biological evolution | 1 | 12 | 3942 | 5064 |
| 214 | biochemical markers | 1 | 12 | 1858 | 2434 |
| 214 | Behavior | 1 | 12 | 6029 | 7538 |
| 229 | Pharmacy | 3 | 11 | 2716 | 5097 |
| 229 | Health Services Administration | 1 | 11 | 2625 | 3255 |
| 229 | Antiviral agents | 1 | 11 | 739 | 1087 |
| 229 | Pharmacy management | 3 | 11 | 388 | 842 |
| 229 | management | 1 | 11 | 6104 | 6708 |
| 229 | Therapeutics | 2 | 11 | 2841 | 4760 |
| 229 | health planning | 1 | 11 | 4361 | 5160 |
| 229 | planning | 1 | 11 | 1612 | 2004 |
| 237 | Nutrition physiology | 1 | 10 | 1641 | 2262 |
| 237 | Nutritional support | 1 | 10 | 395 | 644 |
| 239 | Signal Processing | 1 | 9 | 3586 | 4249 |
| 239 | Antibodies | 1 | 9 | 1449 | 1952 |
| 239 | Antigens | 1 | 9 | 1861 | 2431 |
| 242 | Data Mining | 1 | 8 | 3625 | 4810 |
| 242 | Cardiovascular Pharmacology | 1 | 8 | 707 | 1137 |
| 242 | Industrial Safety | 1 | 8 | 2571 | 3180 |
| 242 | Social welfare | 1 | 8 | 1314 | 1796 |
| 242 | data collection | 1 | 8 | 2521 | 3631 |
| 242 | Safety management | 1 | 8 | 1509 | 2018 |
| 242 | Social work | 1 | 8 | 3095 | 3585 |
| 242 | Chronic diseases | 1 | 8 | 1502 | 2252 |
| 250 | Microcirculation | 1 | 7 | 1063 | 1569 |
| 250 | Developmental Neurobiology | 1 | 7 | 1243 | 1664 |
| 250 | Interferons | 1 | 7 | 697 | 1109 |
| 250 | Neuromuscular diseases | 2 | 7 | 1067 | 2041 |
| 250 | Developmental Disabilities | 1 | 7 | 1943 | 2829 |
| 250 | psychopathology | 1 | 7 | 655 | 983 |
| 250 | X-rays | 1 | 7 | 1520 | 1847 |
| 250 | cytokines | 1 | 7 | 2651 | 3704 |
| 250 | Blood vessels | 1 | 7 | 877 | 1297 |
| 250 | Neurodevelopmental disorders | 1 | 7 | 146 | 193 |
| 250 | Muscles | 2 | 7 | 1392 | 2654 |
| 250 | Cytokine | 1 | 7 | 950 | 1541 |
| 250 | Developing countries | 1 | 7 | 4890 | 6039 |
| 263 | Global Health | 2 | 6 | 1814 | 3607 |
| 263 | Biopharmaceutics | 1 | 6 | 2502 | 3443 |
| 263 | Immunohematology | 1 | 6 | 343 | 338 |
| 263 | Blood group antigens | 1 | 6 | 217 | 238 |
| 263 | vascular diseases | 1 | 6 | 1494 | 2158 |
| 263 | drugs | 1 | 6 | 4371 | 5861 |
| 263 | Gastrointestinal diseases | 1 | 6 | 1629 | 2302 |
| 270 | Radiography | 1 | 5 | 1398 | 2024 |
| 270 | Radiation Protection | 1 | 5 | 1534 | 1834 |
| 270 | Health Physics | 1 | 5 | 567 | 780 |
| 270 | radiation monitoring | 1 | 5 | 1387 | 1723 |
| 270 | Diagnosis | 1 | 5 | 1447 | 2207 |
| 270 | Feasibility studies | 1 | 5 | 693 | 1060 |
| 270 | Personality Disorders | 1 | 5 | 578 | 906 |
| 277 | Palliative Care | 2 | 4 | 1465 | 2955 |
| 277 | Systems Biology | 1 | 4 | 3275 | 4954 |
| 277 | Cardiac electrophysiology | 1 | 4 | 559 | 938 |
| 277 | Health | 1 | 4 | 4910 | 6874 |
| 277 | Parasitology | 1 | 4 | 4255 | 5661 |
| 277 | Communication in medicine | 1 | 4 | 1125 | 1892 |
| 277 | Electrophysiology | 1 | 4 | 2324 | 3064 |
| 277 | Communication | 1 | 4 | 3995 | 5137 |
| 277 | Bacteria | 1 | 4 | 808 | 1385 |
| 277 | Bacterial infections | 1 | 4 | 2002 | 3170 |
| 277 | arrhythmia | 1 | 4 | 559 | 938 |
| 277 | Psychophysiology | 1 | 4 | 5053 | 6661 |
| 289 | Bioengineering | 4 | 3 | 4837 | 10084 |
| 289 | Genetic engineering | 4 | 3 | 2450 | 5923 |
| 289 | hospice care | 1 | 3 | 1338 | 2250 |
| 289 | Lymphoma | 3 | 3 | 1002 | 1479 |
| 289 | Multiple Myeloma | 3 | 3 | 995 | 1454 |
| 289 | family violence | 1 | 3 | 868 | 1570 |
| 289 | child abuse | 1 | 3 | 1717 | 2741 |
| 289 | Post-traumatic stress disorder | 1 | 3 | 1547 | 2462 |
| 289 | violence | 1 | 3 | 1900 | 2979 |
| 298 | Pathology | 2 | 2 | 3613 | 6440 |
| 298 | Pediatric Endocrinology | 1 | 2 | 809 | 1266 |
| 298 | Neurosurgery | 4 | 2 | 1309 | 3222 |
| 298 | industrial hygiene | 1 | 2 | 2636 | 3784 |
| 298 | Learning disabilities | 1 | 2 | 1582 | 2523 |
| 298 | risk factors | 1 | 2 | 1541 | 2242 |
| 298 | Lymphatic system | 1 | 2 | 247 | 490 |
| 298 | Hearing Aids | 1 | 2 | 478 | 772 |
| 298 | Metabolic disorders in children | 1 | 2 | 734 | 1173 |
| 298 | Reproduction | 6 | 2 | 2182 | 6053 |
| 298 | Hearing | 1 | 2 | 1348 | 2104 |
| 298 | Intellectual disability | 1 | 2 | 1788 | 2747 |
| 298 | Coronary heart disease | 4 | 2 | 196 | 926 |
| 311 | Pediatric Neurology | 1 | 1 | 2095 | 3169 |
| 311 | Artificial Organs | 1 | 1 | 1469 | 2188 |
| 311 | Chromatography | 1 | 1 | 3154 | 4711 |
| 311 | Quality of life | 1 | 1 | 3173 | 5124 |
| 311 | Nervous system | 1 | 1 | 4651 | 6747 |
| 311 | Chromatographic analysis | 1 | 1 | 3596 | 5188 |
| 317 | Clinical Laboratory Science | 1 | 0 | 620 | 1211 |
| 317 | General Surgery | 1 | 0 | 1614 | 2558 |
| 317 | Data Science | 1 | 0 | 387 | 427 |
| 317 | Exercise therapy | 1 | 0 | 975 | 1742 |
| 317 | Mycology | 1 | 0 | 3027 | 4428 |
| 317 | mycoses | 1 | 0 | 1804 | 2910 |
| 317 | anesthesia | 1 | 0 | 1340 | 2033 |
| 317 | cardiac catheterization | 1 | 0 | 1595 | 2362 |
| 317 | Population | 1 | 0 | 2275 | 3704 |
