| 1 | Cardiovascular system | 39 | 4.5K | 435 | 282 |
| 2 | Hypertension | 31 | 4.2K | 544 | 277 |
| 3 | Biochemistry | 85 | 3.4K | 2683 | 2178 |
| 4 | Medicine | 75 | 2.6K | 3107 | 2937 |
| 5 | Electrophysiology | 19 | 1.9K | 427 | 54 |
| 6 | Molecular Biology | 73 | 1.9K | 2403 | 2778 |
| 7 | Cardiac electrophysiology | 5 | 1.8K | 182 | 11 |
| 7 | arrhythmia | 5 | 1.8K | 182 | 11 |
| 9 | Science | 51 | 1.6K | 3890 | 4699 |
| 10 | Chemistry | 66 | 1.4K | 3229 | 3737 |
| 11 | Diagnostic Imaging | 29 | 1.3K | 632 | 417 |
| 12 | Research | 47 | 1.2K | 3306 | 3249 |
| 13 | Biophysics | 58 | 1.2K | 1861 | 2006 |
| 14 | Metabolism | 22 | 1.1K | 1415 | 1210 |
| 15 | Surgery | 25 | 1.1K | 896 | 992 |
| 16 | cardiac catheterization | 69 | 1.1K | 77 | 94 |
| 17 | Biology | 40 | 1.0K | 4117 | 5173 |
| 18 | Cardiovascular diseases | 105 | 992 | 128 | 373 |
| 19 | Endocrinology | 18 | 953 | 1684 | 1416 |
| 20 | Metabolic diseases | 15 | 899 | 1437 | 1216 |
| 21 | Neurology | 42 | 721 | 2053 | 2789 |
| 22 | Critical Care | 9 | 705 | 1225 | 936 |
| 23 | Critical Care Medicine | 8 | 685 | 1228 | 944 |
| 24 | Nutrition | 27 | 675 | 1859 | 1980 |
| 25 | Cell death | 9 | 663 | 862 | 629 |
| 26 | Cell Biology | 18 | 651 | 2366 | 2663 |
| 27 | Cancer | 17 | 611 | 2105 | 2052 |
| 28 | Pharmacology | 16 | 584 | 3304 | 2825 |
| 29 | Cell differentiation | 7 | 558 | 1451 | 1145 |
| 30 | Cytology | 9 | 472 | 3450 | 2979 |
| 30 | Heart Failure | 14 | 472 | 157 | 197 |
| 32 | risk factors | 84 | 464 | 23 | 259 |
| 33 | Diet | 14 | 459 | 1229 | 1310 |
| 34 | Obesity | 12 | 412 | 1234 | 1228 |
| 35 | Diabetes | 7 | 382 | 1899 | 1627 |
| 36 | Physiology | 9 | 375 | 3300 | 2655 |
| 37 | Signal Transduction | 7 | 360 | 1112 | 941 |
| 37 | Antioxidants | 7 | 360 | 533 | 566 |
| 37 | Oxidation-reduction | 7 | 360 | 573 | 626 |
| 40 | Biotechnology | 8 | 349 | 5205 | 4351 |
| 41 | Diabetes mellitus | 6 | 348 | 1954 | 1641 |
| 42 | Nervous system | 18 | 339 | 1201 | 1796 |
| 43 | Neuromuscular diseases | 4 | 331 | 713 | 354 |
| 43 | Muscles | 4 | 331 | 960 | 536 |
| 45 | drug therapy | 4 | 318 | 2687 | 1535 |
| 46 | Epidemiology | 1 | 314 | 7525 | 2415 |
| 46 | disease outbreaks | 1 | 314 | 1215 | 291 |
| 46 | Epidemics | 1 | 314 | 1140 | 289 |
| 49 | Oral Medicine | 1 | 287 | 1423 | 108 |
| 49 | Clinical Pharmacology | 2 | 287 | 2275 | 830 |
| 51 | Orthopedics | 19 | 283 | 701 | 951 |
| 52 | Pathology | 10 | 263 | 1725 | 1876 |
| 53 | Artificial Organs | 7 | 251 | 498 | 271 |
| 54 | Genomics | 7 | 245 | 2895 | 2467 |
| 55 | Physics | 8 | 236 | 8109 | 8621 |
| 55 | Biomedical Engineering | 20 | 236 | 2505 | 3628 |
| 57 | Urology | 9 | 220 | 1386 | 1448 |
| 57 | Orthopedic Surgery | 11 | 220 | 450 | 515 |
| 59 | Immunology | 13 | 209 | 2567 | 3392 |
| 60 | rehabilitation | 3 | 202 | 2772 | 1556 |
| 61 | Engineering | 10 | 201 | 3301 | 2511 |
| 62 | Radiology | 7 | 193 | 1369 | 933 |
| 63 | Respiration | 6 | 192 | 1358 | 1285 |
| 64 | X-rays | 5 | 189 | 598 | 257 |
| 65 | Emergency Medicine | 12 | 183 | 921 | 946 |
| 66 | Environment | 4 | 179 | 5626 | 5674 |
| 67 | Entropy | 9 | 178 | 560 | 428 |
| 67 | Immunity | 7 | 178 | 1605 | 2372 |
| 69 | disabilities | 1 | 175 | 1600 | 470 |
| 70 | Emergency Medical Services | 10 | 167 | 385 | 378 |
| 71 | Stem cells | 7 | 155 | 1360 | 1595 |
| 72 | Mathematics | 7 | 153 | 5255 | 3725 |
| 73 | Carbohydrate | 1 | 151 | 96 | 69 |
| 73 | Carbohydrates | 1 | 151 | 974 | 436 |
| 75 | Clinical Chemistry | 12 | 146 | 1927 | 2953 |
| 76 | vascular diseases | 3 | 133 | 912 | 829 |
| 77 | Sports Medicine | 12 | 128 | 1572 | 1855 |
| 78 | Gerontology | 7 | 124 | 1558 | 1430 |
| 79 | Immune system | 6 | 120 | 923 | 1528 |
| 80 | RNA | 1 | 117 | 1071 | 605 |
| 81 | Genetics | 1 | 116 | 6921 | 4579 |
| 81 | Functional Genomics | 1 | 116 | 668 | 381 |
| 81 | genome | 1 | 116 | 3192 | 2091 |
| 84 | human behavior | 2 | 115 | 3614 | 2988 |
| 85 | Autoimmunity | 2 | 108 | 1152 | 1010 |
| 86 | Behavior | 2 | 107 | 4662 | 3818 |
| 87 | Geriatrics | 4 | 106 | 3455 | 2770 |
| 87 | Animal Behavior | 1 | 106 | 3360 | 2151 |
| 87 | Ethology | 1 | 106 | 2674 | 1835 |
| 87 | Psychophysiology | 1 | 106 | 4897 | 3109 |
| 91 | Inflammation | 7 | 105 | 938 | 1553 |
| 91 | cell adhesion molecules | 7 | 105 | 289 | 596 |
| 91 | cytokines | 7 | 105 | 987 | 1549 |
| 91 | cell interaction | 7 | 105 | 854 | 1347 |
| 91 | Cell communication | 7 | 105 | 531 | 912 |
| 96 | Microbiology | 3 | 103 | 7968 | 7505 |
| 97 | Bones | 5 | 101 | 913 | 1156 |
| 98 | Medical Imaging | 11 | 98 | 169 | 345 |
| 98 | Magnetic Resonance Imaging | 11 | 98 | 249 | 516 |
| 100 | Psychiatry | 4 | 93 | 4933 | 4906 |
| 100 | Biomechanics | 6 | 93 | 1225 | 1515 |
| 102 | Cell division | 4 | 89 | 535 | 657 |
| 103 | Enteral nutrition | 3 | 85 | 1139 | 1191 |
| 103 | Parenteral nutrition | 3 | 85 | 1384 | 1418 |
| 105 | Andrology | 3 | 84 | 812 | 708 |
| 105 | dietary supplements | 3 | 84 | 958 | 931 |
| 107 | Infertility | 4 | 83 | 1162 | 1398 |
| 107 | fertility | 4 | 83 | 1250 | 1478 |
| 109 | Immunopathology | 5 | 82 | 1391 | 1803 |
| 110 | Environmental Health | 1 | 81 | 9477 | 6712 |
| 111 | Obstetrics | 3 | 79 | 3227 | 2828 |
| 112 | Cardiovascular Pharmacology | 1 | 74 | 680 | 312 |
| 113 | Neurosurgery | 2 | 67 | 1756 | 1524 |
| 113 | Hemostasis | 2 | 67 | 1244 | 1021 |
| 113 | Thrombosis | 2 | 67 | 1663 | 1547 |
| 116 | Sexual health | 5 | 66 | 659 | 779 |
| 117 | Environmental Microbiology | 1 | 64 | 2821 | 2264 |
| 117 | Microbial Ecology | 1 | 64 | 4172 | 3626 |
| 117 | Medical Physics | 2 | 64 | 2406 | 1954 |
| 117 | Jurisprudence | 8 | 64 | 652 | 912 |
| 121 | Allergy | 2 | 62 | 1817 | 2065 |
| 122 | Electrocardiography | 8 | 58 | 228 | 333 |
| 123 | Engineering Mathematics | 1 | 57 | 4579 | 2398 |
| 123 | Numerical Analysis | 1 | 57 | 4058 | 2326 |
| 123 | mathematical concepts | 1 | 57 | 904 | 365 |
| 126 | Medical genetics | 5 | 56 | 2819 | 4303 |
| 127 | body temperature | 1 | 55 | 1112 | 601 |
| 128 | Alternative Medicine | 3 | 54 | 2329 | 2528 |
| 128 | complementary therapies | 3 | 54 | 2561 | 2619 |
| 130 | Chronobiology | 2 | 53 | 673 | 559 |
| 130 | Circadian rhythms | 2 | 53 | 465 | 498 |
| 130 | biological clocks | 2 | 53 | 673 | 559 |
| 130 | Physical fitness | 7 | 53 | 784 | 1352 |
| 130 | circadian rhythm | 2 | 53 | 673 | 559 |
| 130 | biological rhythms | 2 | 53 | 630 | 547 |
| 130 | Gastrointestinal diseases | 3 | 53 | 927 | 912 |
| 137 | Randomized Controlled Trials | 4 | 52 | 1326 | 1380 |
| 138 | Visual Perception | 6 | 51 | 1565 | 2661 |
| 138 | Memory | 6 | 51 | 1695 | 2939 |
| 138 | Attention | 6 | 51 | 1622 | 2738 |
| 138 | Perception | 6 | 51 | 1743 | 2851 |
| 142 | Immunotherapy | 2 | 50 | 2853 | 2982 |
| 142 | Clinical Laboratory Science | 2 | 50 | 439 | 311 |
| 144 | Longevity | 2 | 47 | 286 | 317 |
| 144 | rejuvenation | 2 | 47 | 199 | 273 |
| 146 | Carcinogenesis | 4 | 46 | 1074 | 1864 |
| 147 | Computer Science | 7 | 44 | 1757 | 2479 |
| 147 | Electrophoresis | 4 | 44 | 1831 | 2551 |
| 149 | Signal Processing | 3 | 43 | 2415 | 2444 |
| 149 | Therapeutics | 2 | 43 | 2775 | 3136 |
| 149 | Liver diseases | 3 | 43 | 1816 | 2658 |
| 152 | Geriatric Psychiatry | 2 | 40 | 1698 | 1860 |
| 152 | Geriatric Oncology | 3 | 40 | 743 | 1129 |
| 154 | Pediatric Neurology | 1 | 39 | 1998 | 2288 |
| 154 | Technology | 1 | 39 | 8051 | 5781 |
| 156 | Physical Therapy | 3 | 38 | 1669 | 2249 |
| 156 | Eating Disorders | 3 | 38 | 1018 | 1396 |
| 156 | Feeding and Eating Disorders | 3 | 38 | 975 | 1344 |
| 159 | Nuclear Medicine | 3 | 37 | 1367 | 1565 |
| 159 | Molecular Imaging | 2 | 37 | 1029 | 1256 |
| 159 | Europe | 2 | 37 | 5001 | 4309 |
| 159 | drug evaluation | 1 | 37 | 2776 | 2314 |
| 163 | Histology | 2 | 36 | 2761 | 3182 |
| 163 | Histochemistry | 2 | 36 | 1713 | 1684 |
| 163 | arthritis | 1 | 36 | 2363 | 2467 |
| 166 | Molecular Genetics | 1 | 35 | 3389 | 3393 |
| 166 | infrared radiation | 1 | 35 | 1334 | 875 |
| 166 | Lipids | 1 | 35 | 2631 | 2575 |
| 166 | biochemical markers | 5 | 35 | 726 | 1423 |
| 166 | gene mapping | 1 | 35 | 4015 | 3870 |
| 171 | Pharmaceutical Chemistry | 5 | 34 | 3954 | 5955 |
| 172 | drugs | 1 | 33 | 4357 | 3788 |
| 172 | Aging | 4 | 33 | 3234 | 4331 |
| 172 | proteins | 3 | 33 | 2687 | 3398 |
| 175 | Medical Microbiology | 1 | 32 | 4462 | 4492 |
| 175 | Proteome | 1 | 32 | 2321 | 2413 |
| 177 | Systems Biology | 2 | 31 | 2550 | 2716 |
| 177 | Primary health care | 3 | 31 | 2362 | 2990 |
| 179 | Nursing | 5 | 30 | 1841 | 2550 |
| 179 | Neuroplasticity | 1 | 30 | 834 | 779 |
| 179 | neuronal plasticity | 1 | 30 | 703 | 703 |
| 179 | tomography | 7 | 30 | 240 | 575 |
| 183 | Evidence-Based Medicine | 2 | 29 | 1997 | 2200 |
| 183 | Sports | 2 | 29 | 2889 | 2592 |
| 185 | Quality of life | 4 | 28 | 1628 | 3057 |
| 186 | Diagnosis | 4 | 27 | 613 | 1155 |
| 186 | infection | 2 | 27 | 2641 | 3278 |
| 186 | disease susceptibility | 4 | 27 | 312 | 802 |
| 186 | symptoms | 4 | 27 | 312 | 802 |
| 190 | Oncology | 4 | 26 | 2575 | 4752 |
| 190 | Pharmacogenetics | 1 | 26 | 2193 | 2299 |
| 190 | Pharmacogenomics | 1 | 26 | 770 | 877 |
| 193 | Community Psychiatry | 1 | 25 | 2148 | 2113 |
| 193 | Computational Fluid Dynamics | 1 | 25 | 1376 | 1204 |
| 195 | rare diseases | 2 | 24 | 1050 | 1375 |
| 195 | Developing countries | 3 | 24 | 3146 | 4123 |
| 197 | Bioengineering | 2 | 23 | 6338 | 7648 |
| 197 | musculoskeletal system | 1 | 23 | 341 | 361 |
| 199 | Electronics | 1 | 22 | 6054 | 4791 |
| 199 | Echocardiography | 2 | 22 | 152 | 254 |
| 201 | Radiation Protection | 2 | 21 | 1144 | 998 |
| 201 | Hemodynamics | 3 | 21 | 748 | 1468 |
| 201 | Computer-Aided Design | 1 | 21 | 2495 | 2280 |
| 201 | Diagnostic microbiology | 1 | 21 | 2556 | 3267 |
| 201 | histological techniques | 1 | 21 | 1417 | 1720 |
| 201 | Mycology | 1 | 21 | 2969 | 2914 |
| 201 | mycoses | 1 | 21 | 1735 | 2006 |
| 201 | Pituitary gland | 2 | 21 | 334 | 517 |
| 209 | Medical Technology | 3 | 20 | 2399 | 3932 |
| 209 | Infections | 1 | 20 | 2471 | 2887 |
| 209 | Biocompatible Materials | 1 | 20 | 6111 | 6596 |
| 209 | Food | 2 | 20 | 4613 | 5904 |
| 213 | Hematology | 2 | 19 | 4463 | 4742 |
| 213 | Lung Transplantation | 1 | 19 | 1125 | 1001 |
| 213 | Heart transplantation | 1 | 19 | 1125 | 1001 |
| 216 | Organic Chemistry | 2 | 18 | 4238 | 5063 |
| 217 | Congenital heart disease | 4 | 17 | 62 | 83 |
| 217 | Information Science | 1 | 17 | 4852 | 4691 |
| 219 | Dermatology | 4 | 16 | 1988 | 3255 |
| 219 | Bioorganic chemistry | 2 | 16 | 3813 | 4988 |
| 219 | System analysis | 2 | 16 | 3632 | 4505 |
| 219 | Kidney diseases | 1 | 16 | 2005 | 2113 |
| 223 | Psychosomatic Medicine | 2 | 15 | 1259 | 2022 |
| 223 | Leukemia | 1 | 15 | 2209 | 2295 |
| 225 | Neurobiology | 2 | 13 | 2539 | 3934 |
| 225 | Health Services Research | 2 | 13 | 2822 | 3859 |
| 225 | Holistic Health | 2 | 13 | 734 | 1149 |
| 225 | allied health | 2 | 13 | 420 | 757 |
| 229 | Statistics | 2 | 12 | 3799 | 4352 |
| 229 | Neurovirology | 2 | 12 | 377 | 804 |
| 229 | Medical innovations | 1 | 12 | 2196 | 3204 |
| 229 | drug development | 1 | 12 | 2308 | 3088 |
| 229 | cell physiology | 1 | 12 | 2796 | 3623 |
| 229 | Vaccines | 1 | 12 | 3696 | 4358 |
| 235 | Meteorology | 1 | 11 | 4219 | 4986 |
| 235 | Information Systems | 1 | 11 | 3066 | 3486 |
| 237 | Pediatrics | 2 | 10 | 4059 | 5694 |
| 237 | behavioral medicine | 1 | 10 | 2750 | 3648 |
| 237 | software | 1 | 10 | 2014 | 2594 |
| 240 | Palliative Care | 1 | 9 | 1979 | 2236 |
| 240 | Clinical Biochemistry | 2 | 9 | 2103 | 3103 |
| 240 | Physical organic chemistry | 1 | 9 | 2390 | 2894 |
| 240 | food technology | 1 | 9 | 4563 | 5484 |
| 240 | Mental Disorders | 1 | 9 | 5834 | 6660 |
| 240 | Drug design | 2 | 9 | 2712 | 4093 |
| 240 | pain management | 1 | 9 | 1487 | 1721 |
| 240 | Biometrics | 1 | 9 | 2079 | 2385 |
| 240 | United Kingdom | 1 | 9 | 3304 | 3868 |
| 240 | pain | 1 | 9 | 2788 | 3272 |
| 240 | Mental illness | 1 | 9 | 3951 | 4799 |
| 251 | Social Sciences | 1 | 8 | 7305 | 6565 |
| 251 | Sociology | 1 | 8 | 6044 | 6428 |
| 251 | Sleep Disorders | 1 | 8 | 3212 | 3489 |
| 251 | Health | 2 | 8 | 3681 | 5799 |
| 251 | Genetic testing | 1 | 8 | 862 | 1132 |
| 251 | Biomarkers | 1 | 8 | 1072 | 1463 |
| 251 | Sleep | 1 | 8 | 3232 | 3498 |
| 258 | Proteomics | 1 | 7 | 2297 | 3202 |
| 258 | Computational Biology | 1 | 7 | 5704 | 6541 |
| 258 | Oxidative stress | 1 | 7 | 2300 | 3391 |
| 258 | Cellular senescence | 1 | 7 | 1583 | 2507 |
| 258 | Biological Systems | 1 | 7 | 1738 | 2253 |
| 258 | Bioinformatics | 1 | 7 | 3907 | 4740 |
| 258 | Digestive system diseases | 3 | 7 | 1237 | 2581 |
| 265 | Public Health | 1 | 6 | 11119 | 12375 |
| 265 | Chemotherapy | 1 | 6 | 2992 | 3870 |
| 265 | patient satisfaction | 1 | 6 | 377 | 388 |
| 265 | Freeze-Drying | 1 | 6 | 1074 | 1318 |
| 265 | Hypothermia | 1 | 6 | 1074 | 1318 |
| 265 | Freeze Drying | 1 | 6 | 1074 | 1318 |
| 271 | Archaeology | 1 | 5 | 2538 | 2735 |
| 271 | Tropical Medicine | 1 | 5 | 3763 | 4792 |
| 271 | Statistical physics | 1 | 5 | 5663 | 6492 |
| 271 | Sites | 1 | 5 | 1066 | 1686 |
| 275 | Clinical Immunology | 1 | 4 | 2544 | 3451 |
| 275 | Radiotherapy | 2 | 4 | 616 | 743 |
| 277 | healthcare disparities | 1 | 3 | 1135 | 1807 |
| 277 | Women's health | 1 | 3 | 2943 | 4052 |
| 279 | Paleontology | 1 | 2 | 2242 | 2931 |
| 279 | Paleopathology | 1 | 2 | 625 | 940 |
| 279 | Criminal investigation | 1 | 2 | 447 | 740 |
| 279 | Genes | 1 | 2 | 2304 | 3447 |
| 283 | Neuropsychology | 1 | 1 | 4162 | 5772 |
| 283 | Health Education | 1 | 1 | 4019 | 5948 |
| 283 | epilepsy | 1 | 1 | 1962 | 2977 |
| 283 | Patient education | 1 | 1 | 1301 | 2259 |
| 283 | Bacteriology | 1 | 1 | 3546 | 5106 |
| 283 | protein | 2 | 1 | 1846 | 3477 |
| 283 | counseling | 1 | 1 | 2677 | 4048 |
| 283 | data collection | 2 | 1 | 1951 | 3920 |
| 283 | psychotherapy | 1 | 1 | 2559 | 3653 |
| 292 | Medical Laboratory Science | 1 | 0 | 4206 | 6260 |
| 292 | Analytical Chemistry | 1 | 0 | 7222 | 9551 |
| 292 | Anthropological Linguistics | 2 | 0 | 399 | 906 |
| 292 | Neurochemistry | 1 | 0 | 4120 | 5714 |
| 292 | Image Processing | 1 | 0 | 3728 | 5472 |
| 292 | Neurotransmitters | 3 | 0 | 653 | 1400 |
| 292 | Atherosclerosis | 1 | 0 | 404 | 817 |
| 292 | locomotion | 1 | 0 | 1362 | 2110 |
| 292 | posture | 1 | 0 | 1362 | 2110 |
| 292 | glycoproteins | 1 | 0 | 997 | 1706 |
| 292 | older people | 1 | 0 | 3292 | 4450 |
| 292 | Glycoconjugates | 1 | 0 | 997 | 1706 |
| 292 | Brain | 3 | 0 | 3159 | 6153 |
| 292 | Oligosaccharides | 1 | 0 | 592 | 1167 |
| 292 | Parkinson's disease | 1 | 0 | 605 | 1040 |
| 292 | Dementia | 2 | 0 | 2109 | 3181 |
| 292 | Alzheimer's disease | 2 | 0 | 2156 | 3271 |
| 292 | Endocrine system | 2 | 0 | 1316 | 1717 |
| 292 | pharmaceutical industry | 1 | 0 | 1322 | 2332 |
| 292 | gait | 1 | 0 | 1362 | 2110 |
| 292 | glycolipids | 1 | 0 | 997 | 1706 |
| 292 | diseases | 1 | 0 | 827 | 1600 |
| 292 | Disease | 1 | 0 | 839 | 1661 |
| 292 | walking | 1 | 0 | 1362 | 2110 |
