| 1 | Medicine | 692 | 60.8K | 34 | 45 |
| 2 | Public Health | 402 | 19.7K | 62 | 68 |
| 3 | Epidemiology | 269 | 18.5K | 77 | 64 |
| 4 | Biometrics | 38 | 17.3K | 167 | 5 |
| 5 | Statistics | 43 | 16.6K | 547 | 29 |
| 6 | Chronic diseases | 155 | 14.0K | 6 | 19 |
| 7 | Health Services Research | 308 | 13.1K | 2 | 10 |
| 8 | Science | 289 | 10.7K | 330 | 2,240 |
| 9 | Research | 322 | 9.6K | 58 | 244 |
| 10 | Pediatrics | 169 | 8.5K | 103 | 123 |
| 11 | Primary health care | 191 | 6.9K | 3 | 1 |
| 12 | Geriatrics | 159 | 5.4K | 46 | 117 |
| 13 | Critical Care | 65 | 4.6K | 46 | 81 |
| 13 | Critical Care Medicine | 65 | 4.6K | 48 | 81 |
| 15 | Surgery | 79 | 4.4K | 94 | 298 |
| 16 | Health Policy | 153 | 4.2K | 29 | 57 |
| 17 | medical education | 128 | 4.2K | 25 | 42 |
| 18 | Medical genetics | 82 | 4.2K | 324 | 527 |
| 19 | Cardiovascular system | 29 | 4.1K | 294 | 235 |
| 20 | health planning | 132 | 4.1K | 14 | 16 |
| 21 | Hypertension | 26 | 3.6K | 397 | 234 |
| 22 | rehabilitation | 96 | 3.6K | 25 | 39 |
| 23 | United States | 99 | 3.2K | 199 | 253 |
| 24 | Public Policy | 104 | 3.0K | 12 | 19 |
| 25 | Health Education | 99 | 2.9K | 26 | 39 |
| 26 | Biology | 18 | 2.9K | 12,233 | 7,479 |
| 27 | Obstetrics | 92 | 2.8K | 188 | 229 |
| 28 | arthritis | 31 | 2.8K | 94 | 39 |
| 29 | Psychiatry | 116 | 2.7K | 408 | 1,246 |
| 30 | Neurology | 59 | 2.6K | 2,439 | 3,398 |
| 31 | Mental Disorders | 105 | 2.5K | 221 | 768 |
| 32 | Hematology | 45 | 2.5K | 755 | 776 |
| 33 | Urology | 41 | 2.1K | 396 | 309 |
| 34 | Physics | 7 | 2.0K | 19,894 | 8,983 |
| 35 | Rheumatology | 39 | 2.0K | 67 | 49 |
| 36 | Research Design | 27 | 2.0K | 58 | 67 |
| 37 | Human genetics | 37 | 1.9K | 594 | 2,846 |
| 38 | Psychology | 49 | 1.9K | 782 | 893 |
| 39 | Natural history | 2 | 1.9K | 11,621 | 5,853 |
| 40 | Physical Therapy | 37 | 1.8K | 99 | 111 |
| 41 | blood transfusion | 27 | 1.8K | 90 | 26 |
| 42 | drug therapy | 58 | 1.7K | 204 | 301 |
| 43 | Randomized Controlled Trials | 52 | 1.7K | 22 | 23 |
| 43 | Mental illness | 76 | 1.7K | 139 | 673 |
| 45 | Health | 86 | 1.7K | 39 | 151 |
| 46 | Quality of life | 44 | 1.7K | 33 | 76 |
| 47 | Pharmacology | 47 | 1.7K | 1,662 | 1,904 |
| 48 | Sociology | 37 | 1.7K | 230 | 297 |
| 49 | pain | 52 | 1.6K | 98 | 297 |
| 50 | Medical Anthropology | 34 | 1.6K | 101 | 171 |
| 51 | Health Services Administration | 64 | 1.5K | 16 | 62 |
| 52 | Molecular Biology | 11 | 1.5K | 17,997 | 8,003 |
| 53 | Oncology | 25 | 1.3K | 482 | 1,523 |
| 54 | Transplantation | 32 | 1.3K | 199 | 289 |
| 55 | alcoholism | 42 | 1.3K | 177 | 237 |
| 56 | Microbiology | 23 | 1.3K | 4,740 | 4,728 |
| 57 | Medical Oncology | 26 | 1.2K | 416 | 470 |
| 58 | Genomics | 32 | 1.2K | 564 | 800 |
| 59 | Chemotherapy | 34 | 1.2K | 89 | 91 |
| 60 | Kidney diseases | 42 | 1.2K | 67 | 99 |
| 61 | Emergency Medicine | 35 | 1.1K | 41 | 47 |
| 62 | Radiobiology | 24 | 1.1K | 339 | 343 |
| 63 | Adolescent Medicine | 22 | 1.1K | 86 | 147 |
| 64 | drug addiction | 35 | 1.1K | 135 | 213 |
| 65 | Cancer | 35 | 1.1K | 1,166 | 2,641 |
| 66 | Nephrology | 39 | 1.1K | 53 | 87 |
| 67 | Palliative Care | 38 | 1.1K | 36 | 51 |
| 68 | Decision making | 48 | 1.1K | 5 | 74 |
| 69 | Child | 55 | 1.1K | 184 | 431 |
| 70 | Women's health | 18 | 1.1K | 237 | 107 |
| 71 | government | 63 | 1.0K | 11 | 31 |
| 72 | Europe | 26 | 1.0K | 473 | 340 |
| 73 | Medical Technology | 25 | 1.0K | 21 | 72 |
| 74 | Ethics | 16 | 972 | 139 | 34 |
| 75 | Therapeutics | 31 | 945 | 218 | 548 |
| 76 | Information Science | 18 | 928 | 348 | 293 |
| 77 | Cardiovascular diseases | 36 | 922 | 47 | 138 |
| 78 | disabilities | 33 | 911 | 15 | 21 |
| 79 | Holistic Health | 17 | 907 | 9 | 7 |
| 80 | Nutrition | 31 | 903 | 1,166 | 1,943 |
| 81 | Medical Ethics | 24 | 893 | 64 | 32 |
| 81 | Parasitic Diseases | 17 | 893 | 301 | 244 |
| 83 | allied health | 16 | 878 | 7 | 7 |
| 84 | Computational Biology | 18 | 869 | 979 | 1,366 |
| 85 | Health insurance | 22 | 842 | 40 | 66 |
| 86 | Long-Term Care | 31 | 801 | 23 | 98 |
| 86 | Long-term care facilities | 31 | 801 | 23 | 98 |
| 88 | Medical Microbiology | 19 | 800 | 705 | 1,125 |
| 89 | health services accessibility | 37 | 796 | 54 | 104 |
| 90 | infection | 18 | 772 | 224 | 344 |
| 91 | Reproduction | 6 | 744 | 2,642 | 851 |
| 92 | Infections | 15 | 740 | 120 | 286 |
| 92 | Social work | 28 | 740 | 39 | 35 |
| 94 | Thorax | 17 | 736 | 86 | 88 |
| 95 | Liver diseases | 17 | 731 | 292 | 734 |
| 96 | older people | 38 | 726 | 58 | 133 |
| 97 | Diabetes | 18 | 705 | 894 | 1,596 |
| 98 | Geriatric Oncology | 33 | 699 | 11 | 51 |
| 99 | Socioeconomic Factors | 27 | 657 | 28 | 66 |
| 100 | Social welfare | 23 | 651 | 9 | 9 |
| 101 | Vaccines | 30 | 641 | 175 | 395 |
| 102 | Endocrinology | 12 | 630 | 3,346 | 3,747 |
| 103 | Bioinformatics | 8 | 623 | 1,893 | 1,411 |
| 104 | health workforce | 9 | 609 | 19 | 13 |
| 105 | Pregnancy | 11 | 606 | 239 | 132 |
| 106 | Hemophilia | 20 | 595 | 35 | 36 |
| 107 | Data Mining | 6 | 589 | 227 | 141 |
| 107 | biomedicine | 6 | 589 | 223 | 80 |
| 109 | Child welfare | 5 | 562 | 625 | 90 |
| 110 | rare diseases | 10 | 561 | 84 | 65 |
| 111 | Substance Abuse | 31 | 559 | 239 | 425 |
| 112 | Global Health | 30 | 554 | 87 | 142 |
| 113 | Mental Health Services | 17 | 547 | 286 | 275 |
| 114 | Diet | 14 | 530 | 939 | 1,618 |
| 115 | Orthopedics | 18 | 529 | 445 | 504 |
| 116 | Thrombosis | 13 | 511 | 319 | 624 |
| 117 | Hemostasis | 12 | 510 | 93 | 63 |
| 118 | drug control | 23 | 508 | 26 | 55 |
| 119 | Maternal health services | 3 | 493 | 444 | 69 |
| 120 | Genetics | 8 | 492 | 5,446 | 6,152 |
| 120 | Environmental Health | 17 | 492 | 2,901 | 5,176 |
| 122 | drug abuse | 16 | 491 | 91 | 97 |
| 123 | Diabetes mellitus | 12 | 481 | 1,248 | 2,171 |
| 124 | health services | 22 | 475 | 68 | 193 |
| 125 | preventive medicine | 18 | 471 | 266 | 574 |
| 126 | Obesity | 20 | 454 | 680 | 1,591 |
| 127 | drugs | 18 | 444 | 478 | 790 |
| 128 | counseling | 17 | 441 | 277 | 360 |
| 129 | Adolescent | 23 | 440 | 415 | 813 |
| 130 | Patient education | 16 | 439 | 65 | 158 |
| 131 | Hospitals | 19 | 438 | 44 | 86 |
| 132 | Aging | 25 | 425 | 587 | 2,129 |
| 133 | management | 19 | 415 | 298 | 897 |
| 134 | harm reduction | 13 | 409 | 25 | 19 |
| 135 | Clinical Pharmacology | 16 | 391 | 321 | 507 |
| 136 | Dermatology | 11 | 389 | 960 | 889 |
| 137 | Metabolism | 17 | 388 | 1,837 | 4,456 |
| 138 | Toxicology | 12 | 379 | 4,408 | 5,322 |
| 139 | Child Development | 12 | 336 | 913 | 1,378 |
| 140 | Developing countries | 13 | 334 | 400 | 678 |
| 141 | Elderly | 23 | 325 | 53 | 96 |
| 142 | Ecology | 8 | 319 | 8,637 | 11,185 |
| 143 | Environmental Policy | 6 | 313 | 2,646 | 3,169 |
| 144 | pain management | 20 | 307 | 37 | 179 |
| 145 | occupational diseases | 14 | 298 | 171 | 430 |
| 146 | Behavior | 14 | 296 | 1,743 | 3,906 |
| 147 | Nervous system | 6 | 295 | 3,396 | 3,950 |
| 148 | Mental Health | 25 | 294 | 224 | 692 |
| 149 | Pharmacy | 16 | 292 | 770 | 1,476 |
| 150 | Pharmacy management | 15 | 281 | 54 | 64 |
| 151 | health behavior | 14 | 279 | 271 | 460 |
| 152 | Geriatric Pharmacology | 16 | 274 | 8 | 67 |
| 153 | Food | 1 | 270 | 12,202 | 3,096 |
| 153 | feeding behavior | 1 | 270 | 1,803 | 440 |
| 153 | Appetite | 1 | 270 | 1,524 | 365 |
| 156 | Pediatric Rheumatology | 14 | 269 | 27 | 35 |
| 157 | environmental protection | 8 | 265 | 2,346 | 3,342 |
| 157 | Qualitative Research | 6 | 265 | 79 | 74 |
| 159 | System analysis | 6 | 262 | 1,790 | 1,153 |
| 160 | Community Psychiatry | 9 | 260 | 453 | 695 |
| 160 | Heart Failure | 8 | 260 | 69 | 216 |
| 162 | Bone diseases | 6 | 254 | 148 | 537 |
| 163 | Developmental Disabilities | 10 | 252 | 438 | 909 |
| 164 | Dialysis | 22 | 249 | 20 | 19 |
| 164 | Kidney transplantation | 22 | 249 | 18 | 18 |
| 166 | Pediatric Neurology | 4 | 246 | 1,399 | 2,248 |
| 167 | Information Systems | 3 | 243 | 1,061 | 471 |
| 167 | Autism | 8 | 243 | 299 | 516 |
| 169 | Environmental monitoring | 6 | 242 | 4,125 | 4,866 |
| 170 | Environmental Engineering | 5 | 239 | 4,852 | 5,343 |
| 170 | Occupational Health | 16 | 239 | 157 | 407 |
| 170 | Environmental Law | 5 | 239 | 755 | 1,290 |
| 170 | Environment | 5 | 239 | 8,971 | 11,675 |
| 174 | Geriatric Psychiatry | 9 | 232 | 366 | 554 |
| 175 | Muscles | 4 | 226 | 748 | 705 |
| 175 | international cooperation | 14 | 226 | 50 | 252 |
| 177 | Lung Transplantation | 6 | 220 | 241 | 300 |
| 177 | Heart transplantation | 6 | 220 | 241 | 300 |
| 177 | Cardiopulmonary Resuscitation | 12 | 220 | 6 | 4 |
| 177 | cardiac arrest | 12 | 220 | 6 | 4 |
| 181 | Parenteral nutrition | 10 | 215 | 388 | 939 |
| 182 | Psychiatric hospitals | 6 | 211 | 176 | 184 |
| 183 | Alternative Medicine | 10 | 209 | 319 | 804 |
| 183 | complementary therapies | 10 | 209 | 338 | 805 |
| 185 | diseases | 1 | 203 | 550 | 1,251 |
| 185 | Disease | 1 | 203 | 648 | 1,270 |
| 187 | Embryology | 1 | 199 | 7,000 | 3,618 |
| 188 | Gerontology | 21 | 198 | 320 | 1,501 |
| 188 | community participation | 14 | 198 | 4 | 21 |
| 188 | Faculty | 14 | 198 | 4 | 21 |
| 191 | healthcare disparities | 8 | 195 | 131 | 207 |
| 192 | Alzheimer's disease | 5 | 194 | 1,318 | 1,447 |
| 193 | Dementia | 4 | 193 | 1,344 | 1,189 |
| 194 | Health promotion | 11 | 182 | 405 | 966 |
| 195 | Engineering | 2 | 179 | 11,520 | 4,257 |
| 195 | Engineering Ethics | 2 | 179 | 163 | 53 |
| 195 | Professional ethics | 2 | 179 | 204 | 58 |
| 195 | cardiac catheterization | 6 | 179 | 74 | 80 |
| 199 | Health Risk Assessment | 7 | 177 | 68 | 111 |
| 200 | Nursing | 16 | 173 | 490 | 840 |
| 201 | Tropical Medicine | 7 | 172 | 791 | 886 |
| 202 | Respiratory Infections | 4 | 171 | 143 | 119 |
| 202 | Influenza | 4 | 171 | 86 | 86 |
| 204 | Risk Management | 6 | 167 | 160 | 338 |
| 205 | Jurisprudence | 5 | 163 | 514 | 368 |
| 206 | disease vectors | 3 | 161 | 855 | 581 |
| 207 | Telemedicine | 7 | 160 | 60 | 196 |
| 208 | Globalization | 10 | 159 | 35 | 245 |
| 209 | urban health | 5 | 157 | 128 | 217 |
| 210 | Neurosurgery | 3 | 156 | 1,381 | 1,226 |
| 211 | Economics | 5 | 155 | 2,991 | 2,689 |
| 211 | Reproductive health | 5 | 155 | 456 | 541 |
| 213 | Parasitology | 2 | 153 | 4,086 | 1,861 |
| 213 | Parasites | 2 | 153 | 2,312 | 1,061 |
| 215 | Demography | 5 | 152 | 393 | 571 |
| 216 | Spine | 4 | 149 | 639 | 786 |
| 217 | Birth control | 4 | 147 | 287 | 329 |
| 218 | Sleep Disorders | 12 | 145 | 690 | 2,105 |
| 219 | Schizophrenia | 9 | 143 | 681 | 1,748 |
| 219 | environmental exposure | 7 | 143 | 967 | 2,279 |
| 221 | Evidence-Based Medicine | 6 | 142 | 127 | 405 |
| 222 | Genetic Counseling | 7 | 139 | 132 | 151 |
| 223 | Dentistry | 6 | 137 | 594 | 548 |
| 224 | patient satisfaction | 8 | 136 | 2 | 12 |
| 225 | Systems Analysis | 10 | 133 | 186 | 470 |
| 225 | Production Management | 3 | 133 | 643 | 903 |
| 227 | Contraception | 4 | 132 | 459 | 478 |
| 227 | Leukemia | 3 | 132 | 1,591 | 1,969 |
| 227 | traffic safety | 6 | 132 | 64 | 75 |
| 230 | Vocational guidance | 1 | 127 | 1,314 | 568 |
| 231 | Immunology | 5 | 126 | 7,602 | 12,270 |
| 231 | Mixed methods research | 3 | 126 | 4 | 3 |
| 233 | Neuropsychiatry | 3 | 125 | 1,389 | 1,421 |
| 233 | Gastrointestinal diseases | 4 | 125 | 220 | 282 |
| 235 | Infertility | 2 | 123 | 1,698 | 1,643 |
| 235 | fertility | 2 | 123 | 1,847 | 1,737 |
| 235 | Immunity | 4 | 123 | 3,716 | 7,937 |
| 238 | Ophthalmology | 9 | 122 | 1,402 | 3,029 |
| 239 | risk factors | 4 | 121 | 316 | 508 |
| 239 | planning | 9 | 121 | 68 | 262 |
| 241 | Cognitive Science | 2 | 119 | 2,792 | 2,539 |
| 241 | Metabolic diseases | 7 | 119 | 3,234 | 8,965 |
| 241 | drug development | 2 | 119 | 2,316 | 3,894 |
| 241 | Sleep | 6 | 119 | 1,371 | 2,466 |
| 245 | Behavioral research | 2 | 116 | 681 | 206 |
| 246 | Cardiovascular Pharmacology | 4 | 115 | 32 | 64 |
| 247 | Human Rights | 4 | 114 | 254 | 230 |
| 247 | hospice care | 8 | 114 | 113 | 296 |
| 247 | Neuromuscular diseases | 3 | 114 | 715 | 794 |
| 250 | Sarcopenia | 1 | 112 | 983 | 635 |
| 251 | Medical innovations | 1 | 111 | 4,090 | 4,532 |
| 252 | Chemistry | 4 | 110 | 35,038 | 46,597 |
| 252 | marketing | 1 | 110 | 1,378 | 680 |
| 254 | Child psychology | 4 | 109 | 1,691 | 2,447 |
| 255 | human behavior | 2 | 107 | 5,804 | 6,749 |
| 256 | Cognitive Therapy | 1 | 103 | 1,144 | 532 |
| 256 | behavior therapy | 1 | 103 | 1,378 | 703 |
| 256 | autism spectrum disorder | 1 | 103 | 99 | 32 |
| 259 | Public Administration | 12 | 100 | 192 | 782 |
| 260 | Asthma | 6 | 99 | 269 | 587 |
| 261 | Student Health Services | 1 | 98 | 628 | 224 |
| 262 | Education | 4 | 97 | 3,186 | 3,603 |
| 262 | Bioethics | 9 | 97 | 187 | 471 |
| 262 | primary prevention | 1 | 97 | 917 | 382 |
| 265 | Psychophysiology | 4 | 95 | 5,322 | 8,896 |
| 266 | Organ transplantation | 7 | 92 | 213 | 316 |
| 267 | epilepsy | 1 | 91 | 2,970 | 1,452 |
| 267 | Bacterial infections | 3 | 91 | 837 | 2,429 |
| 269 | Prognosis | 3 | 90 | 13 | 29 |
| 270 | Economic Development | 2 | 89 | 1,673 | 2,152 |
| 271 | internet | 5 | 87 | 1,100 | 2,044 |
| 272 | Immunotherapy | 6 | 85 | 1,978 | 6,732 |
| 272 | Artificial Organs | 2 | 85 | 957 | 613 |
| 272 | Pollution | 5 | 85 | 9,412 | 18,841 |
| 272 | sports injuries | 3 | 85 | 423 | 403 |
| 276 | mycoses | 2 | 84 | 1,177 | 2,434 |
| 276 | Host-parasite interactions | 2 | 84 | 2,751 | 4,802 |
| 276 | Population | 3 | 84 | 818 | 1,222 |
| 279 | Industrial Safety | 6 | 83 | 440 | 1,228 |
| 280 | Brain damage | 4 | 82 | 238 | 523 |
| 281 | Clinical Trials | 6 | 81 | 232 | 552 |
| 282 | Intellectual disability | 4 | 80 | 598 | 882 |
| 283 | Sustainable Development | 2 | 77 | 2,526 | 3,445 |
| 284 | Sports Medicine | 6 | 75 | 1,951 | 4,521 |
| 284 | Organizational change | 2 | 75 | 276 | 285 |
| 286 | Neuropsychology | 2 | 74 | 6,512 | 6,692 |
| 286 | Carcinogenesis | 5 | 74 | 728 | 2,755 |
| 286 | sustainability | 1 | 74 | 1,903 | 1,883 |
| 289 | Operations Research | 3 | 73 | 2,483 | 2,639 |
| 289 | breastfeeding | 4 | 73 | 321 | 628 |
| 291 | Cytogenetics | 2 | 72 | 4,128 | 6,759 |
| 291 | Technology | 5 | 72 | 4,809 | 9,354 |
| 293 | Pharmacogenetics | 5 | 67 | 865 | 3,733 |
| 293 | pharmaceutical industry | 8 | 67 | 162 | 580 |
| 295 | Biophysics | 3 | 66 | 25,912 | 31,566 |
| 295 | Medical Physics | 3 | 66 | 2,934 | 4,363 |
| 295 | Reproductive toxicology | 2 | 66 | 608 | 870 |
| 295 | ecosystem | 1 | 66 | 3,063 | 2,784 |
| 295 | Biodiversity | 1 | 66 | 6,544 | 4,937 |
| 300 | Ergonomics | 9 | 65 | 302 | 988 |
| 300 | Pharmacogenomics | 4 | 65 | 122 | 613 |
| 300 | Feasibility studies | 7 | 65 | 57 | 135 |
| 303 | Social policy | 9 | 64 | 90 | 850 |
| 304 | Process Control | 1 | 63 | 1,323 | 1,341 |
| 305 | Amyotrophic Lateral Sclerosis | 1 | 61 | 480 | 384 |
| 305 | Frontotemporal lobar degeneration | 1 | 61 | 381 | 263 |
| 305 | Social Change | 2 | 61 | 607 | 1,288 |
| 308 | Australia | 9 | 60 | 927 | 2,935 |
| 309 | Social Sciences | 4 | 59 | 3,037 | 4,637 |
| 309 | environmental pollution | 2 | 59 | 12,045 | 15,569 |
| 311 | Clinical Immunology | 4 | 58 | 1,286 | 3,386 |
| 311 | Respiration | 1 | 58 | 5,760 | 4,899 |
| 313 | economic policy | 8 | 57 | 916 | 2,206 |
| 313 | Regional Development | 8 | 57 | 52 | 345 |
| 313 | child behavior | 2 | 57 | 406 | 656 |
| 313 | weight loss | 5 | 57 | 62 | 198 |
| 317 | Biotechnology | 4 | 56 | 14,777 | 29,528 |
| 317 | liver | 1 | 56 | 607 | 367 |
| 319 | Teratology | 2 | 54 | 489 | 748 |
| 319 | abnormalities | 2 | 54 | 234 | 405 |
| 321 | Allergy | 4 | 53 | 1,602 | 5,434 |
| 322 | Occupational Therapy | 8 | 52 | 338 | 1,010 |
| 322 | Bioengineering | 3 | 52 | 11,665 | 21,385 |
| 322 | Biochemical Engineering | 3 | 52 | 7,416 | 14,229 |
| 322 | Eating Disorders | 3 | 52 | 1,176 | 2,050 |
| 322 | Feeding and Eating Disorders | 3 | 52 | 1,137 | 1,984 |
| 327 | Exercise | 2 | 51 | 1,942 | 2,293 |
| 328 | Biomedical Engineering | 4 | 50 | 12,142 | 23,481 |
| 329 | Genetic testing | 4 | 49 | 121 | 314 |
| 330 | Psychosomatic Medicine | 3 | 48 | 966 | 2,325 |
| 330 | Organizational Behavior | 1 | 48 | 449 | 572 |
| 330 | behavioral medicine | 7 | 48 | 882 | 4,780 |
| 330 | Atherosclerosis | 2 | 48 | 77 | 298 |
| 330 | Trust | 1 | 48 | 19 | 12 |
| 335 | Software Engineering | 1 | 44 | 1,471 | 1,217 |
| 335 | Requirements Engineering | 1 | 44 | 69 | 105 |
| 337 | Criminology | 1 | 42 | 1,948 | 1,387 |
| 337 | Crime prevention | 1 | 42 | 476 | 295 |
| 337 | Smoking | 4 | 42 | 738 | 2,010 |
| 340 | Humanities | 3 | 40 | 635 | 1,310 |
| 341 | Depression | 2 | 38 | 519 | 1,433 |
| 341 | Vaccination | 3 | 38 | 137 | 549 |
| 341 | Anxiety Disorders | 2 | 38 | 790 | 1,877 |
| 341 | Anxiety | 2 | 38 | 777 | 1,834 |
| 341 | Safety management | 2 | 38 | 619 | 783 |
| 346 | Radiation Oncology | 1 | 37 | 920 | 1,065 |
| 346 | Genetic disorders | 1 | 37 | 1,280 | 1,458 |
| 346 | scientific societies | 1 | 37 | 2,146 | 2,213 |
| 346 | Psychiatric Epidemiology | 2 | 37 | 801 | 1,699 |
| 350 | Neonatology | 5 | 36 | 250 | 1,471 |
| 351 | Osteoporosis | 5 | 35 | 95 | 842 |
| 352 | Architectural Design | 1 | 34 | 804 | 593 |
| 352 | drug resistance | 2 | 34 | 700 | 1,944 |
| 352 | design | 1 | 34 | 397 | 346 |
| 355 | ethnicity | 1 | 33 | 1,011 | 851 |
| 355 | poverty | 2 | 33 | 259 | 761 |
| 355 | health and race | 1 | 33 | 333 | 421 |
| 355 | ethnic groups | 1 | 33 | 589 | 678 |
| 355 | chronic disease | 3 | 33 | 238 | 788 |
| 355 | genome | 1 | 33 | 7,359 | 10,130 |
| 361 | Bones | 1 | 32 | 2,531 | 3,962 |
| 362 | Cost control | 2 | 31 | 50 | 92 |
| 363 | Forensic Psychiatry | 2 | 30 | 858 | 1,188 |
| 363 | Infection control | 1 | 30 | 584 | 894 |
| 363 | Israel | 3 | 30 | 129 | 142 |
| 366 | Healing | 1 | 29 | 135 | 162 |
| 366 | Autoantibodies | 1 | 29 | 1,560 | 2,445 |
| 366 | Autoimmunity | 1 | 29 | 2,191 | 3,444 |
| 366 | Autoimmune diseases | 1 | 29 | 1,758 | 2,764 |
| 370 | Geriatric Nursing | 5 | 28 | 218 | 732 |
| 370 | Quality Assurance | 1 | 28 | 454 | 387 |
| 370 | Technological Innovations | 2 | 28 | 1,087 | 2,353 |
| 373 | Physiology | 1 | 27 | 24,732 | 29,030 |
| 373 | mental health promotion | 2 | 27 | 189 | 388 |
| 373 | anesthesia | 3 | 27 | 117 | 471 |
| 373 | child abuse | 3 | 27 | 810 | 2,352 |
| 373 | Post-traumatic stress disorder | 1 | 27 | 1,826 | 2,211 |
| 378 | Environmental Toxicology | 3 | 26 | 3,926 | 12,380 |
| 378 | pollutants | 3 | 26 | 2,304 | 7,915 |
| 378 | Environmental pollutants | 3 | 26 | 3,234 | 10,141 |
| 378 | Suicide | 2 | 26 | 589 | 1,274 |
| 382 | disease outbreaks | 4 | 25 | 451 | 2,277 |
| 382 | Epidemics | 4 | 25 | 437 | 2,235 |
| 382 | Multiple sclerosis | 4 | 25 | 478 | 1,344 |
| 385 | Otolaryngology | 6 | 24 | 441 | 1,859 |
| 385 | Pediatric Hematology | 1 | 24 | 1,214 | 959 |
| 385 | Adult Education | 1 | 24 | 730 | 627 |
| 385 | Human-Computer Interaction | 1 | 24 | 3,085 | 3,839 |
| 385 | Online social networks | 1 | 24 | 437 | 608 |
| 390 | Social support | 1 | 23 | 315 | 545 |
| 390 | Library Science | 1 | 23 | 469 | 473 |
| 390 | Social environment | 1 | 23 | 324 | 555 |
| 390 | sports administration | 1 | 23 | 290 | 350 |
| 390 | Stress | 2 | 23 | 232 | 858 |
| 395 | Virology | 1 | 22 | 13,002 | 18,573 |
| 396 | Oral Medicine | 4 | 21 | 860 | 2,703 |
| 396 | homosexuality | 1 | 21 | 835 | 1,211 |
| 396 | Asia | 3 | 21 | 2,784 | 6,793 |
| 396 | psychotherapy | 1 | 21 | 2,953 | 3,571 |
| 396 | Immune system | 1 | 21 | 4,135 | 6,879 |
| 396 | Allergies | 2 | 21 | 142 | 505 |
| 402 | Antiviral agents | 3 | 20 | 83 | 620 |
| 402 | scholarly publishing | 2 | 20 | 40 | 187 |
| 404 | sexual behavior | 1 | 18 | 1,836 | 2,872 |
| 405 | calcification | 1 | 17 | 1,549 | 2,921 |
| 405 | Electrophysiology | 2 | 17 | 927 | 2,871 |
| 405 | prostaglandins | 1 | 17 | 1,168 | 1,860 |
| 408 | Systems Engineering | 2 | 16 | 4,074 | 7,687 |
| 408 | Cybernetics | 1 | 16 | 4,388 | 6,473 |
| 408 | Psychopharmacology | 2 | 16 | 4,169 | 9,488 |
| 408 | biobanks | 1 | 16 | 178 | 298 |
| 408 | violence | 1 | 16 | 1,670 | 2,563 |
| 408 | Aggression | 1 | 16 | 921 | 1,588 |
| 408 | Cognition | 1 | 16 | 5,269 | 7,421 |
| 415 | Risk assessment | 2 | 14 | 496 | 1,849 |
| 415 | peer review | 1 | 14 | 29 | 160 |
| 415 | sadness | 1 | 14 | 191 | 398 |
| 415 | death | 1 | 14 | 294 | 529 |
| 415 | antisocial personality disorder | 1 | 14 | 191 | 398 |
| 420 | Cost of illness | 1 | 13 | 55 | 99 |
| 420 | Disease management | 1 | 13 | 176 | 290 |
| 420 | Enteral nutrition | 2 | 13 | 1,441 | 4,841 |
| 420 | Physical fitness | 1 | 13 | 2,540 | 4,365 |
| 420 | Communication | 2 | 13 | 2,299 | 5,958 |
| 420 | children | 1 | 13 | 597 | 951 |
| 426 | Radiology | 2 | 12 | 2,049 | 5,134 |
| 426 | Artificial Intelligence | 1 | 12 | 12,994 | 17,598 |
| 426 | Crisis Intervention | 1 | 12 | 298 | 614 |
| 426 | rural health | 1 | 12 | 479 | 911 |
| 426 | Telecommunication | 1 | 12 | 6,551 | 8,293 |
| 426 | Digestive system diseases | 1 | 12 | 2,345 | 4,642 |
| 432 | Dietetics | 3 | 11 | 769 | 2,737 |
| 432 | Molecular Genetics | 1 | 11 | 6,456 | 11,430 |
| 432 | Population Genetics | 1 | 11 | 3,268 | 5,980 |
| 432 | Antibacterial agents | 1 | 11 | 1,205 | 2,863 |
| 432 | Speech Disorders | 1 | 11 | 2,387 | 3,652 |
| 432 | Molecular ecology | 1 | 11 | 2,931 | 5,873 |
| 432 | disaster relief | 1 | 11 | 263 | 725 |
| 439 | Information Technology | 1 | 10 | 5,203 | 8,468 |
| 439 | physical therapy techniques | 1 | 10 | 281 | 396 |
| 439 | Cardiac electrophysiology | 1 | 10 | 312 | 954 |
| 439 | Radiotherapy | 1 | 10 | 373 | 669 |
| 439 | arrhythmia | 1 | 10 | 312 | 954 |
| 444 | Emergency Medical Services | 3 | 9 | 404 | 2,666 |
| 444 | Human Geography | 1 | 9 | 1,945 | 3,394 |
| 444 | Neurovirology | 1 | 9 | 717 | 1,563 |
| 444 | mental health policy | 3 | 9 | 162 | 824 |
| 444 | Health equity | 2 | 9 | 40 | 275 |
| 444 | local government | 1 | 9 | 443 | 986 |
| 444 | Laser therapy | 1 | 9 | 973 | 1,599 |
| 451 | Audiology | 2 | 8 | 1,483 | 3,909 |
| 451 | Orthopedic Surgery | 3 | 8 | 751 | 3,312 |
| 451 | Learning disabilities | 2 | 8 | 1,137 | 3,097 |
| 451 | Sexual health | 2 | 8 | 955 | 3,018 |
| 451 | locomotion | 1 | 8 | 1,250 | 2,532 |
| 451 | posture | 1 | 8 | 1,250 | 2,532 |
| 451 | gait | 1 | 8 | 1,250 | 2,532 |
| 451 | Zoonoses | 1 | 8 | 456 | 1,150 |
| 451 | walking | 1 | 8 | 1,250 | 2,532 |
| 460 | Political Science | 1 | 7 | 2,692 | 3,413 |
| 460 | Psychiatric Nursing | 1 | 7 | 1,490 | 2,520 |
| 460 | Electrocardiography | 1 | 7 | 249 | 585 |
| 460 | Travel | 1 | 7 | 1,303 | 2,741 |
| 460 | Pacific Islands | 2 | 7 | 167 | 708 |
| 460 | migration policy | 1 | 7 | 80 | 267 |
| 466 | Econometrics | 1 | 6 | 2,257 | 3,191 |
| 466 | Public Health Administration | 1 | 6 | 329 | 712 |
| 466 | Feminist Economics | 1 | 6 | 97 | 325 |
| 466 | Drug design | 1 | 6 | 5,297 | 11,123 |
| 466 | Neuroendocrinology | 1 | 6 | 273 | 974 |
| 466 | Feminism | 1 | 6 | 817 | 1,722 |
| 466 | nursing ethics | 1 | 6 | 136 | 372 |
| 466 | Teaching | 2 | 6 | 2,172 | 6,197 |
| 466 | Screening | 1 | 6 | 419 | 1,209 |
| 466 | society | 2 | 6 | 50 | 334 |
| 466 | India | 1 | 6 | 2,620 | 3,891 |
| 477 | Technology Assessment | 1 | 5 | 388 | 1,428 |
| 477 | Lymphoma | 1 | 5 | 714 | 1,350 |
| 477 | Neurotransmitters | 2 | 5 | 605 | 2,373 |
| 477 | Multiple Myeloma | 1 | 5 | 701 | 1,324 |
| 477 | Brain | 2 | 5 | 9,683 | 22,854 |
| 477 | Africa | 1 | 5 | 3,726 | 6,455 |
| 483 | Neurogenetics | 2 | 4 | 513 | 2,683 |
| 483 | implementation science | 2 | 4 | 40 | 197 |
| 483 | United Kingdom | 2 | 4 | 3,515 | 11,438 |
| 486 | Pediatric Endocrinology | 1 | 3 | 763 | 1,744 |
| 486 | Social Psychology | 1 | 3 | 4,856 | 9,748 |
| 486 | industrial hygiene | 3 | 3 | 773 | 4,510 |
| 486 | preimplantation genetic diagnosis | 1 | 3 | 1,100 | 2,680 |
| 486 | embryo transfer | 1 | 3 | 1,135 | 2,743 |
| 486 | Respiratory system | 1 | 3 | 1,461 | 4,109 |
| 486 | Hypertension in pregnancy | 1 | 3 | 371 | 1,072 |
| 493 | Geography | 1 | 2 | 5,125 | 10,674 |
| 493 | Nuclear Medicine | 1 | 2 | 3,372 | 6,484 |
| 493 | Community Health Nursing | 1 | 2 | 126 | 355 |
| 493 | Radiography | 1 | 2 | 2,298 | 5,033 |
| 493 | Image Processing | 1 | 2 | 5,954 | 11,028 |
| 493 | Precision medicine | 1 | 2 | 507 | 1,539 |
| 493 | Speech Perception | 1 | 2 | 521 | 1,233 |
| 493 | Genetic polymorphisms | 1 | 2 | 49 | 126 |
| 493 | auditory perception | 1 | 2 | 567 | 1,349 |
| 493 | Pastoral Theology | 1 | 2 | 103 | 190 |
| 493 | Genetic markers | 1 | 2 | 455 | 2,080 |
| 493 | Oral communication | 1 | 2 | 491 | 1,223 |
| 493 | animal diseases | 1 | 2 | 1,282 | 3,485 |
| 493 | Speech | 1 | 2 | 1,943 | 4,192 |
| 493 | recreation | 1 | 2 | 875 | 1,920 |
| 508 | Music Therapy | 1 | 1 | 285 | 906 |
| 508 | Art Therapy | 1 | 1 | 236 | 781 |
| 508 | Geographic information systems | 1 | 1 | 2,226 | 5,653 |
| 508 | epidemiologic methods | 1 | 1 | 331 | 1,113 |
| 508 | Health care reform | 1 | 1 | 95 | 317 |
| 508 | vascular diseases | 1 | 1 | 3,098 | 7,602 |
| 514 | Biochemistry | 1 | 0 | 64,401 | 64,432 |
| 514 | Clinical Biochemistry | 1 | 0 | 4,216 | 10,334 |
| 514 | Clinical Chemistry | 1 | 0 | 12,340 | 23,275 |
| 514 | Nutrition physiology | 1 | 0 | 1,777 | 5,159 |
| 514 | Organizational learning | 1 | 0 | 452 | 1,641 |
| 514 | Nutritional support | 1 | 0 | 310 | 1,146 |
| 514 | Exercise therapy | 1 | 0 | 648 | 2,085 |
| 514 | Germany | 1 | 0 | 714 | 2,667 |
| 514 | muscle strength | 1 | 0 | 101 | 311 |