| 1 | Biology | 82 | 10.8K | 132 | 78 |
| 2 | Physics | 58 | 9.5K | 90 | 60 |
| 3 | Science | 50 | 8.3K | 158 | 99 |
| 4 | Cell Biology | 19 | 6.8K | 269 | 71 |
| 5 | Natural history | 12 | 6.8K | 94 | 52 |
| 6 | Cytology | 21 | 6.7K | 157 | 64 |
| 7 | Virology | 6 | 6.3K | 285 | 59 |
| 8 | Molecular Biology | 56 | 4.5K | 143 | 117 |
| 9 | Hematology | 180 | 3.9K | 2 | 4 |
| 10 | Medicine | 50 | 3.4K | 146 | 120 |
| 11 | Cancer | 84 | 3.1K | 13 | 30 |
| 12 | Chemistry | 59 | 2.9K | 576 | 490 |
| 13 | Oncology | 49 | 2.3K | 6 | 18 |
| 14 | Neurology | 41 | 2.2K | 67 | 105 |
| 15 | Leukemia | 62 | 2.0K | 1 | 6 |
| 16 | Human genetics | 14 | 1.8K | 48 | 93 |
| 17 | Biotechnology | 9 | 1.5K | 425 | 124 |
| 18 | Bioengineering | 8 | 1.5K | 192 | 63 |
| 19 | Biochemical Engineering | 7 | 1.5K | 103 | 51 |
| 20 | Therapeutics | 16 | 1.1K | 75 | 70 |
| 21 | Pathology | 22 | 863 | 32 | 65 |
| 22 | Immunology | 16 | 844 | 181 | 276 |
| 23 | gene therapy | 1 | 741 | 166 | 9 |
| 24 | human behavior | 3 | 635 | 136 | 47 |
| 25 | Medical genetics | 26 | 623 | 141 | 390 |
| 26 | Genetics | 16 | 622 | 110 | 231 |
| 27 | Endocrinology | 18 | 621 | 38 | 95 |
| 28 | Research | 47 | 601 | 104 | 410 |
| 29 | Biochemistry | 21 | 535 | 527 | 841 |
| 30 | Metabolism | 15 | 529 | 95 | 135 |
| 31 | behavioral medicine | 4 | 474 | 32 | 17 |
| 32 | Pediatrics | 21 | 462 | 42 | 115 |
| 33 | Immune system | 5 | 453 | 61 | 85 |
| 33 | Immunity | 5 | 453 | 178 | 161 |
| 35 | Quality of life | 13 | 448 | 8 | 19 |
| 36 | nucleic acids | 6 | 431 | 70 | 92 |
| 37 | Medical Oncology | 26 | 389 | 9 | 48 |
| 38 | Geriatric Oncology | 10 | 385 | 5 | 6 |
| 39 | Genomics | 13 | 324 | 56 | 117 |
| 40 | Developmental Biology | 7 | 323 | 217 | 341 |
| 41 | rehabilitation | 10 | 314 | 18 | 36 |
| 42 | Psychology | 16 | 274 | 206 | 501 |
| 43 | Radiobiology | 19 | 269 | 9 | 45 |
| 44 | Psychophysiology | 3 | 267 | 448 | 291 |
| 45 | Animal Behavior | 2 | 261 | 216 | 87 |
| 45 | drug resistance | 2 | 261 | 20 | 10 |
| 45 | Ethology | 2 | 261 | 175 | 72 |
| 45 | Behavior | 3 | 261 | 385 | 232 |
| 49 | Metabolic diseases | 12 | 250 | 101 | 285 |
| 50 | Hormones | 2 | 239 | 51 | 28 |
| 51 | Endocrine glands | 1 | 233 | 22 | 7 |
| 52 | Immunotherapy | 10 | 219 | 11 | 108 |
| 53 | genome | 6 | 211 | 57 | 139 |
| 54 | Cell death | 5 | 209 | 22 | 47 |
| 55 | Gerontology | 1 | 190 | 412 | 55 |
| 56 | Biophysics | 16 | 188 | 225 | 687 |
| 57 | Psychiatry | 4 | 184 | 881 | 885 |
| 58 | Stem cells | 10 | 152 | 21 | 215 |
| 59 | Familial diseases | 7 | 147 | 1 | 3 |
| 60 | Public Health | 3 | 142 | 869 | 797 |
| 61 | Biomedical Engineering | 4 | 141 | 294 | 341 |
| 61 | Diabetes mellitus | 3 | 141 | 370 | 362 |
| 61 | Mental Disorders | 2 | 141 | 722 | 579 |
| 61 | Diabetes | 3 | 141 | 585 | 516 |
| 65 | Palliative Care | 5 | 129 | 13 | 15 |
| 66 | Flow cytometry | 3 | 124 | 73 | 77 |
| 67 | Child | 19 | 122 | 91 | 708 |
| 68 | Ecology | 2 | 116 | 3438 | 3154 |
| 69 | Sleep Disorders | 6 | 114 | 109 | 286 |
| 69 | Sleep | 6 | 114 | 107 | 281 |
| 71 | transport vesicles | 2 | 110 | 106 | 367 |
| 72 | diseases | 1 | 109 | 14 | 50 |
| 72 | Disease | 1 | 109 | 17 | 49 |
| 74 | Pharmacogenetics | 5 | 99 | 13 | 91 |
| 74 | Developmental Genetics | 2 | 99 | 76 | 110 |
| 76 | visualization | 12 | 98 | 10 | 48 |
| 77 | Diagnostic Imaging | 8 | 97 | 26 | 187 |
| 78 | Pediatric Hematology | 14 | 95 | 1 | 6 |
| 79 | Pharmacology | 10 | 94 | 564 | 2477 |
| 80 | Infertility | 3 | 92 | 23 | 57 |
| 80 | Medical innovations | 3 | 92 | 38 | 170 |
| 80 | drug development | 3 | 92 | 72 | 195 |
| 80 | fertility | 3 | 92 | 23 | 57 |
| 84 | Epidemiology | 4 | 88 | 372 | 642 |
| 84 | Chronic diseases | 4 | 88 | 27 | 73 |
| 86 | Nuclear Medicine | 7 | 86 | 9 | 48 |
| 87 | Europe | 7 | 83 | 91 | 237 |
| 88 | Nutrition | 4 | 82 | 641 | 1340 |
| 88 | Enteral nutrition | 4 | 82 | 36 | 76 |
| 88 | Parenteral nutrition | 4 | 82 | 129 | 198 |
| 91 | Child Development | 6 | 81 | 110 | 355 |
| 92 | Molecular Imaging | 5 | 80 | 7 | 40 |
| 93 | Proteomics | 1 | 78 | 125 | 120 |
| 93 | Immunopathology | 4 | 78 | 52 | 211 |
| 93 | Proteome | 1 | 78 | 139 | 140 |
| 96 | Gene expression regulation | 3 | 76 | 66 | 139 |
| 97 | hospice care | 3 | 71 | 11 | 16 |
| 97 | Materials | 1 | 71 | 5695 | 5325 |
| 97 | Optical materials | 1 | 71 | 4324 | 4327 |
| 100 | Nervous system | 4 | 70 | 184 | 1079 |
| 101 | Clinical Biochemistry | 2 | 69 | 56 | 59 |
| 102 | Cell differentiation | 4 | 68 | 287 | 1197 |
| 103 | Embryology | 3 | 67 | 413 | 844 |
| 104 | health behavior | 1 | 66 | 127 | 99 |
| 104 | Health promotion | 1 | 66 | 241 | 177 |
| 104 | Biodiversity | 1 | 66 | 1790 | 750 |
| 107 | Mental illness | 1 | 64 | 711 | 667 |
| 108 | Systems Biology | 4 | 56 | 63 | 199 |
| 109 | Clinical Chemistry | 3 | 55 | 144 | 369 |
| 110 | Environmental Health | 2 | 52 | 543 | 915 |
| 111 | Obstetrics | 2 | 50 | 317 | 498 |
| 111 | Environmental Engineering | 1 | 50 | 1135 | 801 |
| 111 | Environmental Policy | 1 | 50 | 369 | 448 |
| 111 | Environmental Law | 1 | 50 | 117 | 133 |
| 111 | environmental protection | 1 | 50 | 929 | 844 |
| 111 | Environmental monitoring | 1 | 50 | 762 | 661 |
| 111 | Environment | 1 | 50 | 3096 | 4101 |
| 111 | DNA methylation | 2 | 50 | 9 | 27 |
| 119 | Clinical Psychology | 3 | 49 | 258 | 523 |
| 119 | drug therapy | 7 | 49 | 301 | 1986 |
| 121 | Microbiology | 2 | 47 | 1924 | 3269 |
| 122 | United Kingdom | 1 | 46 | 301 | 295 |
| 123 | Health Policy | 2 | 45 | 389 | 873 |
| 123 | Reproduction | 2 | 45 | 649 | 865 |
| 125 | Computational Biology | 3 | 44 | 341 | 1065 |
| 126 | Neuropsychology | 3 | 43 | 115 | 390 |
| 126 | Oncogenes | 2 | 43 | 73 | 302 |
| 126 | Adolescent Psychology | 3 | 43 | 170 | 469 |
| 126 | Child psychology | 3 | 43 | 396 | 1027 |
| 126 | rare diseases | 3 | 43 | 5 | 57 |
| 131 | Pharmacy | 3 | 42 | 351 | 631 |
| 132 | United States | 2 | 41 | 1974 | 2150 |
| 133 | Pharmacogenomics | 1 | 38 | 12 | 28 |
| 133 | Genetic therapy | 3 | 38 | 42 | 313 |
| 135 | Hematopoietic stem cell transplantation | 2 | 37 | 10 | 42 |
| 136 | Homeostasis | 1 | 36 | 35 | 129 |
| 136 | Cell metabolism | 1 | 36 | 197 | 271 |
| 138 | Ophthalmology | 3 | 35 | 82 | 300 |
| 138 | Clinical Immunology | 3 | 35 | 47 | 173 |
| 138 | Health Education | 1 | 35 | 420 | 430 |
| 138 | Patient education | 1 | 35 | 49 | 70 |
| 138 | counseling | 1 | 35 | 534 | 398 |
| 143 | Human-Computer Interaction | 2 | 34 | 44 | 151 |
| 143 | Online social networks | 2 | 34 | 7 | 10 |
| 143 | mental health promotion | 2 | 34 | 5 | 8 |
| 143 | internet | 2 | 34 | 48 | 76 |
| 147 | Radiation Oncology | 3 | 31 | 5 | 31 |
| 147 | Health insurance | 1 | 31 | 77 | 138 |
| 147 | pain | 2 | 31 | 271 | 789 |
| 150 | scientific societies | 3 | 30 | 271 | 877 |
| 151 | Medical Physics | 2 | 29 | 587 | 850 |
| 152 | Andrology | 1 | 28 | 573 | 736 |
| 153 | Lymphoma | 2 | 27 | 7 | 16 |
| 153 | Multiple Myeloma | 2 | 27 | 6 | 10 |
| 153 | Biocompatible Materials | 1 | 27 | 1492 | 2147 |
| 153 | Mycology | 1 | 27 | 178 | 176 |
| 153 | mycoses | 1 | 27 | 54 | 123 |
| 153 | Vaccines | 2 | 27 | 107 | 285 |
| 159 | Cytogenetics | 1 | 26 | 469 | 810 |
| 159 | Alternative Medicine | 2 | 26 | 81 | 302 |
| 159 | complementary therapies | 2 | 26 | 98 | 320 |
| 159 | Genetic regulation | 1 | 26 | 362 | 840 |
| 159 | viral genetics | 1 | 26 | 48 | 110 |
| 164 | Genetic disorders | 2 | 25 | 373 | 959 |
| 164 | Health | 2 | 25 | 684 | 1749 |
| 166 | Anatomy | 2 | 22 | 967 | 2324 |
| 166 | Hemophilia | 1 | 22 | 542 | 495 |
| 168 | Technology | 1 | 20 | 2068 | 3242 |
| 168 | Pituitary gland | 2 | 20 | 4 | 9 |
| 168 | Post-traumatic stress disorder | 1 | 20 | 365 | 570 |
| 171 | Randomized Controlled Trials | 2 | 19 | 52 | 143 |
| 171 | Sarcopenia | 3 | 19 | 76 | 955 |
| 171 | Adolescent | 3 | 19 | 648 | 2132 |
| 171 | Muscles | 3 | 19 | 154 | 1372 |
| 175 | Clinical Pharmacology | 4 | 18 | 384 | 2524 |
| 175 | pain management | 1 | 18 | 479 | 945 |
| 175 | drugs | 4 | 18 | 412 | 2201 |
| 178 | Electrophoresis | 2 | 17 | 891 | 2144 |
| 178 | Chromatography | 2 | 17 | 584 | 1340 |
| 178 | cell physiology | 1 | 17 | 1162 | 2561 |
| 178 | Spectrum analysis | 2 | 17 | 553 | 1342 |
| 178 | Chromatographic analysis | 2 | 17 | 815 | 1699 |
| 178 | health planning | 3 | 17 | 223 | 1222 |
| 184 | Medical Technology | 1 | 16 | 171 | 396 |
| 184 | Molecular evolution | 2 | 16 | 134 | 470 |
| 186 | Health Services Research | 2 | 15 | 211 | 962 |
| 186 | Neonatology | 1 | 15 | 40 | 77 |
| 186 | Personality Assessment | 1 | 15 | 21 | 43 |
| 186 | biological evolution | 1 | 15 | 702 | 1436 |
| 190 | Surgery | 2 | 14 | 155 | 540 |
| 190 | Obesity | 1 | 14 | 2263 | 3950 |
| 192 | Autism | 1 | 13 | 417 | 851 |
| 193 | Geriatrics | 1 | 12 | 2295 | 3784 |
| 193 | Aging | 1 | 12 | 630 | 1079 |
| 193 | gastrointestinal tract | 1 | 12 | 18 | 50 |
| 196 | Antibacterial agents | 1 | 11 | 25 | 66 |
| 196 | cytokines | 2 | 11 | 86 | 400 |
| 198 | Toxicology | 1 | 10 | 2606 | 4942 |
| 198 | Maternal health services | 1 | 10 | 31 | 84 |
| 198 | Child welfare | 1 | 10 | 104 | 249 |
| 198 | Social support | 1 | 10 | 4 | 24 |
| 198 | Social environment | 1 | 10 | 4 | 25 |
| 198 | Women's health | 1 | 10 | 119 | 290 |
| 204 | Medical Imaging | 1 | 9 | 6 | 17 |
| 204 | Health Services Administration | 2 | 9 | 244 | 1216 |
| 204 | Magnetic Resonance Imaging | 1 | 9 | 52 | 197 |
| 204 | Pharmaceutical Chemistry | 2 | 9 | 1567 | 4399 |
| 204 | management | 2 | 9 | 617 | 2012 |
| 204 | planning | 2 | 9 | 119 | 570 |
| 210 | Psychoneuroimmunology | 1 | 8 | 47 | 129 |
| 210 | Neuroimmunology | 1 | 8 | 55 | 152 |
| 212 | Immunopharmacology | 1 | 7 | 56 | 178 |
| 212 | Primary health care | 1 | 7 | 416 | 1018 |
| 212 | Organ transplantation | 1 | 7 | 844 | 1401 |
| 215 | Psychopharmacology | 1 | 6 | 529 | 1169 |
| 215 | gene mapping | 2 | 6 | 187 | 652 |
| 217 | Engineering Mathematics | 1 | 5 | 725 | 1535 |
| 217 | Pharmaceutical Technology | 1 | 5 | 821 | 1532 |
| 217 | Drug delivery systems | 1 | 5 | 106 | 332 |
| 217 | Brachytherapy | 1 | 5 | 3 | 12 |
| 217 | Food | 2 | 5 | 1050 | 4860 |
| 217 | sociological factors | 3 | 5 | 1 | 2 |
| 217 | feeding behavior | 2 | 5 | 27 | 146 |
| 217 | software | 1 | 5 | 40 | 171 |
| 217 | Endocrine system | 5 | 5 | 5 | 43 |
| 217 | Appetite | 2 | 5 | 23 | 133 |
| 227 | Radiology | 1 | 4 | 125 | 314 |
| 227 | Statistics | 1 | 4 | 1448 | 2425 |
| 227 | Radiation Protection | 1 | 4 | 35 | 79 |
| 227 | Health Physics | 1 | 4 | 12 | 29 |
| 227 | radiation monitoring | 1 | 4 | 29 | 72 |
| 227 | Bioinformatics | 1 | 4 | 438 | 1261 |
| 227 | Chromosome mapping | 1 | 4 | 231 | 568 |
| 227 | Radioisotopes | 1 | 4 | 224 | 522 |
| 227 | X-rays | 1 | 4 | 17 | 71 |
| 227 | Biometrics | 1 | 4 | 1039 | 1860 |
| 227 | Allergy | 1 | 4 | 148 | 435 |
| 227 | Growth factors | 1 | 4 | 19 | 101 |
| 227 | Cytokine | 1 | 4 | 20 | 91 |
| 240 | Physiology | 1 | 3 | 3838 | 8927 |
| 240 | Clinical Laboratory Science | 1 | 3 | 14 | 63 |
| 240 | Drug design | 1 | 3 | 690 | 2079 |
| 240 | nuclear magnetic resonance | 1 | 3 | 566 | 1329 |
| 240 | histological techniques | 1 | 3 | 30 | 228 |
| 240 | Magnetic Resonance Spectroscopy | 1 | 3 | 716 | 1658 |
| 246 | Molecular Genetics | 1 | 2 | 1463 | 3839 |
| 246 | Image Processing | 1 | 2 | 588 | 1460 |
| 246 | Integrative Medicine | 1 | 2 | 9 | 33 |
| 246 | Parasitology | 1 | 2 | 273 | 864 |
| 246 | Parasitic Diseases | 1 | 2 | 122 | 376 |
| 246 | Parasites | 1 | 2 | 193 | 685 |
| 252 | Rheumatology | 1 | 1 | 957 | 2611 |
| 252 | Audiology | 1 | 1 | 53 | 176 |
| 252 | Pediatric Rheumatology | 1 | 1 | 13 | 55 |
| 252 | Fluorescence spectroscopy | 1 | 1 | 12 | 42 |
| 252 | Molecular Spectroscopy | 1 | 1 | 111 | 343 |
| 252 | viruses | 1 | 1 | 283 | 1077 |
| 258 | Pediatric Endocrinology | 1 | 0 | 5 | 45 |
| 258 | Neurosurgery | 1 | 0 | 326 | 1310 |
| 258 | Developmental Immunology | 1 | 0 | 92 | 368 |
| 258 | Metabolic disorders in children | 1 | 0 | 5 | 36 |
