| 1 | Medicine | 35 | 4.3K | 4884 | 2519 |
| 2 | United States | 235 | 4.2K | 401 | 606 |
| 3 | Science | 29 | 3.8K | 5407 | 3511 |
| 4 | management | 19 | 3.4K | 1546 | 579 |
| 5 | Nutrition | 69 | 3.4K | 995 | 763 |
| 6 | Biology | 76 | 3.3K | 2883 | 3543 |
| 7 | Diet | 60 | 3.0K | 435 | 431 |
| 8 | Physics | 22 | 2.8K | 5507 | 3892 |
| 9 | Psychology | 46 | 2.7K | 1429 | 932 |
| 10 | Natural history | 7 | 2.6K | 3736 | 2596 |
| 11 | Physical Therapy | 38 | 2.3K | 294 | 212 |
| 12 | human behavior | 10 | 1.9K | 1582 | 735 |
| 13 | Behavior | 26 | 1.8K | 1259 | 937 |
| 14 | Psychiatry | 23 | 1.6K | 2165 | 1522 |
| 15 | Psychophysiology | 3 | 1.3K | 3547 | 1119 |
| 16 | Business Ethics | 6 | 1.3K | 665 | 241 |
| 17 | Financial management | 3 | 1.2K | 589 | 81 |
| 18 | Probability | 1 | 1.2K | 1264 | 82 |
| 18 | Risk Management | 1 | 1.2K | 1698 | 88 |
| 18 | Risk | 1 | 1.2K | 1230 | 95 |
| 21 | Sociology | 24 | 1.2K | 1096 | 726 |
| 22 | marketing | 5 | 1.1K | 1646 | 564 |
| 23 | Hypertension | 4 | 988 | 1897 | 941 |
| 24 | Cardiovascular system | 3 | 985 | 2103 | 983 |
| 25 | Library Science | 160 | 974 | 23 | 55 |
| 26 | Social Psychology | 22 | 941 | 809 | 750 |
| 27 | Social work | 55 | 855 | 226 | 253 |
| 28 | Child psychology | 17 | 821 | 703 | 674 |
| 29 | Public Health | 28 | 786 | 2461 | 2624 |
| 30 | Environmental Health | 7 | 782 | 4705 | 2712 |
| 31 | child abuse | 7 | 778 | 581 | 299 |
| 32 | Second Language Acquisition | 2 | 762 | 261 | 53 |
| 33 | Oncology | 5 | 739 | 2315 | 1671 |
| 34 | Pediatrics | 8 | 738 | 2160 | 1430 |
| 35 | Information Science | 174 | 728 | 72 | 813 |
| 36 | rehabilitation | 15 | 677 | 1130 | 835 |
| 37 | Social problems | 19 | 659 | 153 | 184 |
| 38 | Mental Health | 17 | 655 | 713 | 455 |
| 39 | Business | 5 | 652 | 2052 | 979 |
| 40 | Aging | 50 | 645 | 734 | 1287 |
| 41 | Chemistry | 26 | 633 | 5101 | 5913 |
| 42 | Cancer | 9 | 613 | 2967 | 2302 |
| 43 | Molecular Biology | 6 | 598 | 7478 | 5361 |
| 44 | Malaria | 12 | 566 | 365 | 271 |
| 45 | Genetics | 7 | 543 | 3650 | 2910 |
| 46 | Organizational Sociology | 2 | 541 | 483 | 66 |
| 47 | Adolescent | 19 | 529 | 932 | 883 |
| 48 | Education | 26 | 513 | 1501 | 1223 |
| 49 | Research | 26 | 511 | 4681 | 5711 |
| 50 | psychotherapy | 11 | 471 | 812 | 722 |
| 51 | Economic History | 13 | 461 | 2138 | 1248 |
| 52 | Child welfare | 14 | 446 | 454 | 360 |
| 53 | Geriatrics | 37 | 445 | 970 | 1583 |
| 53 | Child | 15 | 445 | 1412 | 1211 |
| 53 | Learning | 3 | 445 | 1633 | 671 |
| 56 | Dietetics | 35 | 427 | 181 | 287 |
| 57 | Gerontology | 36 | 408 | 540 | 861 |
| 58 | Environment | 10 | 398 | 3650 | 4457 |
| 59 | Obesity | 8 | 392 | 1642 | 1515 |
| 60 | Public Policy | 48 | 344 | 290 | 976 |
| 61 | Family | 22 | 321 | 302 | 447 |
| 62 | Small Business | 5 | 313 | 632 | 640 |
| 63 | commerce | 3 | 305 | 1897 | 848 |
| 64 | Nursing | 25 | 303 | 581 | 738 |
| 65 | Women's health | 9 | 298 | 831 | 678 |
| 66 | adolescence | 10 | 294 | 518 | 589 |
| 67 | Neurology | 9 | 293 | 4326 | 4459 |
| 68 | Environmental Toxicology | 1 | 291 | 4532 | 1987 |
| 68 | Child Development | 11 | 291 | 1255 | 1412 |
| 70 | counseling | 13 | 290 | 678 | 737 |
| 71 | Special Education | 7 | 286 | 547 | 285 |
| 72 | Intellectual disability | 6 | 274 | 681 | 469 |
| 73 | Mental Health Services | 10 | 258 | 789 | 731 |
| 74 | behavior therapy | 26 | 257 | 263 | 569 |
| 75 | Mental Disorders | 8 | 256 | 2528 | 2691 |
| 76 | genome | 2 | 255 | 2553 | 1783 |
| 77 | Adolescent Medicine | 5 | 248 | 564 | 779 |
| 78 | violence | 7 | 247 | 654 | 603 |
| 79 | personality | 6 | 241 | 1110 | 1136 |
| 80 | genre | 7 | 238 | 79 | 16 |
| 81 | Developmental Psychology | 7 | 237 | 772 | 835 |
| 82 | Epidemiology | 8 | 236 | 3204 | 3176 |
| 82 | conflict management | 13 | 236 | 77 | 151 |
| 84 | Social Sciences | 13 | 234 | 2111 | 1772 |
| 85 | Maternal health services | 6 | 232 | 301 | 236 |
| 86 | Archives | 17 | 215 | 23 | 15 |
| 87 | Social welfare | 9 | 212 | 303 | 276 |
| 88 | Physiology | 5 | 211 | 4349 | 3837 |
| 89 | Post-traumatic stress disorder | 2 | 207 | 1146 | 636 |
| 90 | Youth | 6 | 202 | 494 | 513 |
| 91 | Information Technology | 56 | 201 | 287 | 1431 |
| 92 | Entrepreneurship | 7 | 195 | 652 | 890 |
| 93 | older people | 36 | 194 | 427 | 891 |
| 93 | families | 16 | 194 | 307 | 466 |
| 95 | Geriatric Psychiatry | 4 | 192 | 1193 | 937 |
| 95 | Health Education | 13 | 192 | 1051 | 1401 |
| 97 | Family Therapy | 5 | 190 | 640 | 411 |
| 98 | Botany | 9 | 184 | 2965 | 3529 |
| 99 | Genomics | 3 | 183 | 4260 | 3305 |
| 100 | Pediatric Nursing | 51 | 176 | 31 | 239 |
| 101 | Visual Perception | 3 | 174 | 2363 | 1731 |
| 101 | Memory | 3 | 174 | 2535 | 1912 |
| 101 | Attention | 3 | 174 | 2458 | 1772 |
| 101 | Perception | 3 | 174 | 2591 | 1893 |
| 105 | Muscles | 7 | 169 | 713 | 974 |
| 106 | Water pollution | 1 | 162 | 4673 | 2794 |
| 106 | Water | 1 | 162 | 4408 | 2766 |
| 108 | health services | 7 | 160 | 820 | 821 |
| 109 | Clinical Psychology | 7 | 159 | 1183 | 1633 |
| 109 | African Americans | 2 | 159 | 267 | 59 |
| 109 | African American | 2 | 159 | 197 | 46 |
| 112 | Sarcopenia | 6 | 156 | 240 | 515 |
| 113 | libraries | 47 | 155 | 78 | 309 |
| 113 | family violence | 5 | 155 | 340 | 369 |
| 115 | Educational Psychology | 11 | 152 | 796 | 1143 |
| 116 | Endocrinology | 2 | 151 | 4595 | 3544 |
| 117 | Andrology | 1 | 148 | 1408 | 596 |
| 117 | nursing education | 9 | 148 | 29 | 27 |
| 117 | Androgens | 1 | 148 | 553 | 274 |
| 120 | Molecular evolution | 3 | 147 | 2232 | 1863 |
| 120 | biological evolution | 3 | 147 | 2606 | 2500 |
| 122 | Ecology | 11 | 146 | 4589 | 7191 |
| 122 | Information Systems | 16 | 146 | 496 | 1236 |
| 124 | Biochemistry | 10 | 145 | 6902 | 8577 |
| 124 | Documentation | 16 | 145 | 80 | 238 |
| 126 | Health | 8 | 143 | 1781 | 2230 |
| 127 | Occupational Therapy | 9 | 138 | 639 | 526 |
| 127 | Decision making | 1 | 138 | 3214 | 1286 |
| 129 | Obstetric Nursing | 49 | 136 | 24 | 205 |
| 129 | Mass Spectrometry | 4 | 136 | 1342 | 1154 |
| 129 | negotiation | 11 | 136 | 9 | 33 |
| 132 | Health Policy | 12 | 135 | 1410 | 2361 |
| 133 | Microbiology | 12 | 132 | 4681 | 7485 |
| 133 | Communication | 5 | 132 | 1863 | 1511 |
| 135 | Cognitive Therapy | 4 | 131 | 610 | 564 |
| 135 | child mental health | 3 | 131 | 527 | 338 |
| 137 | Regional Planning | 3 | 130 | 1829 | 1284 |
| 138 | Economics | 10 | 126 | 2997 | 3158 |
| 139 | Surface Chemistry | 2 | 125 | 4893 | 3771 |
| 139 | Colloids | 2 | 125 | 4783 | 3933 |
| 141 | Neurophysiology | 3 | 121 | 3519 | 3479 |
| 142 | sex crimes | 5 | 119 | 511 | 553 |
| 142 | Genes | 2 | 119 | 1773 | 1170 |
| 144 | Agricultural Chemistry | 2 | 114 | 3305 | 2516 |
| 145 | Organizational Behavior | 4 | 107 | 549 | 678 |
| 146 | Neurobiology | 1 | 103 | 3295 | 2502 |
| 146 | Elderly | 31 | 103 | 374 | 788 |
| 146 | Student Health Services | 3 | 103 | 303 | 251 |
| 149 | Cultural diversity | 1 | 102 | 339 | 208 |
| 149 | Food | 4 | 102 | 3414 | 3729 |
| 149 | cultural pluralism | 1 | 102 | 793 | 265 |
| 152 | Renewable Energy Sources | 1 | 100 | 4540 | 3746 |
| 153 | Classification | 6 | 99 | 156 | 237 |
| 153 | cataloging | 6 | 99 | 76 | 17 |
| 155 | Health Services Research | 6 | 96 | 1559 | 1966 |
| 155 | Body Image | 2 | 96 | 302 | 298 |
| 157 | ethnicity | 4 | 95 | 683 | 494 |
| 158 | Race | 3 | 91 | 65 | 54 |
| 159 | Primary health care | 4 | 89 | 2016 | 2066 |
| 160 | Health Services Administration | 6 | 87 | 883 | 1347 |
| 160 | elder abuse | 4 | 87 | 286 | 376 |
| 160 | Social support | 4 | 87 | 150 | 222 |
| 160 | Social environment | 4 | 87 | 181 | 253 |
| 164 | Obstetrics | 3 | 85 | 3351 | 3071 |
| 165 | medical education | 6 | 84 | 1712 | 2137 |
| 166 | Metabolism | 1 | 82 | 5194 | 4232 |
| 166 | Enteral nutrition | 1 | 82 | 1931 | 1429 |
| 166 | Parenteral nutrition | 1 | 82 | 2252 | 1659 |
| 169 | Animal Behavior | 1 | 81 | 3476 | 2720 |
| 169 | Ethology | 1 | 81 | 2780 | 2336 |
| 171 | Substance Abuse | 5 | 80 | 1428 | 1795 |
| 172 | Medical Anthropology | 4 | 79 | 1384 | 2134 |
| 173 | Pharmacology | 11 | 78 | 4008 | 6803 |
| 174 | Disability Studies | 3 | 76 | 331 | 230 |
| 174 | Disability Law | 3 | 76 | 195 | 188 |
| 174 | psychopathology | 2 | 76 | 479 | 480 |
| 177 | Patient education | 3 | 75 | 776 | 1022 |
| 178 | Infertility | 1 | 74 | 2148 | 1642 |
| 178 | fertility | 1 | 74 | 2256 | 1736 |
| 180 | Paleontology | 3 | 73 | 1561 | 1380 |
| 180 | Sleep Disorders | 4 | 73 | 1905 | 2131 |
| 180 | Sleep | 4 | 73 | 1919 | 2140 |
| 183 | Mineralogy | 2 | 72 | 1931 | 1562 |
| 183 | Psychiatric Nursing | 4 | 72 | 654 | 718 |
| 183 | Law enforcement | 1 | 72 | 211 | 127 |
| 183 | police | 1 | 72 | 764 | 292 |
| 183 | children | 4 | 72 | 524 | 704 |
| 188 | behavioral medicine | 2 | 71 | 2099 | 2269 |
| 189 | Cognitive Science | 3 | 70 | 1795 | 2106 |
| 189 | organization | 6 | 70 | 558 | 1061 |
| 189 | Growth | 3 | 70 | 1480 | 2114 |
| 192 | Marriage | 5 | 69 | 404 | 623 |
| 192 | Health promotion | 4 | 69 | 1698 | 2139 |
| 194 | women | 12 | 68 | 324 | 681 |
| 195 | Plant Taxonomy | 2 | 67 | 634 | 531 |
| 196 | Neonatology | 2 | 66 | 1046 | 911 |
| 197 | Palliative Care | 5 | 64 | 887 | 1176 |
| 197 | Public Administration | 1 | 64 | 2746 | 1346 |
| 197 | hospice care | 5 | 64 | 519 | 709 |
| 197 | Politics | 3 | 64 | 828 | 498 |
| 197 | government | 3 | 64 | 905 | 655 |
| 197 | pain | 3 | 64 | 1838 | 2228 |
| 203 | Autism spectrum disorders | 1 | 63 | 179 | 121 |
| 204 | industrial relations | 2 | 62 | 1172 | 865 |
| 205 | Political Science | 3 | 61 | 2209 | 1568 |
| 205 | Human-Computer Interaction | 1 | 61 | 2997 | 1923 |
| 205 | behavior modification | 6 | 61 | 308 | 664 |
| 208 | Ethnology | 2 | 60 | 2281 | 1496 |
| 208 | alcoholism | 4 | 60 | 1664 | 2271 |
| 210 | Toxicology | 9 | 59 | 3755 | 6789 |
| 210 | Environmental Policy | 2 | 59 | 4786 | 5285 |
| 212 | Sports | 7 | 58 | 1644 | 2288 |
| 213 | Energy Policy | 1 | 57 | 4627 | 4193 |
| 213 | energy resources | 1 | 57 | 2487 | 2624 |
| 215 | Continuing Education | 5 | 56 | 326 | 360 |
| 215 | Eating Disorders | 3 | 56 | 1060 | 1342 |
| 215 | scientific societies | 4 | 56 | 867 | 1322 |
| 218 | Hydraulic Engineering | 2 | 54 | 1394 | 1250 |
| 218 | Natural resources | 2 | 54 | 1096 | 1239 |
| 218 | Hydrodynamics | 2 | 54 | 800 | 881 |
| 218 | Corporate governance | 2 | 54 | 858 | 876 |
| 222 | Anatomy | 4 | 53 | 2219 | 2962 |
| 223 | Adolescent Psychology | 3 | 50 | 1024 | 1312 |
| 223 | Regional Development | 1 | 50 | 572 | 414 |
| 223 | Development planning | 1 | 50 | 524 | 385 |
| 223 | Economic planning | 1 | 50 | 1031 | 771 |
| 223 | Exercise | 3 | 50 | 1622 | 1718 |
| 228 | Mineral resources | 1 | 49 | 1214 | 1034 |
| 228 | homosexuality | 4 | 49 | 376 | 622 |
| 230 | Social behavior | 3 | 48 | 1398 | 1879 |
| 231 | healthcare disparities | 3 | 47 | 604 | 835 |
| 231 | urban health | 1 | 47 | 658 | 587 |
| 231 | child behavior | 2 | 47 | 582 | 698 |
| 234 | innovation | 3 | 46 | 696 | 1122 |
| 235 | Cost control | 1 | 45 | 386 | 242 |
| 235 | International Finance | 3 | 45 | 1818 | 2122 |
| 237 | drug development | 7 | 44 | 808 | 2576 |
| 237 | Culture | 3 | 44 | 1245 | 1125 |
| 237 | Marriage counseling | 1 | 44 | 675 | 578 |
| 237 | drugs | 7 | 44 | 1874 | 3666 |
| 241 | Green Chemistry | 1 | 43 | 2823 | 2979 |
| 241 | Project Management | 1 | 43 | 551 | 720 |
| 241 | Sustainable Engineering | 1 | 43 | 2907 | 2726 |
| 241 | Holistic Health | 1 | 43 | 1095 | 666 |
| 241 | Developmental Disabilities | 4 | 43 | 1045 | 1903 |
| 241 | allied health | 1 | 43 | 580 | 436 |
| 241 | Suicide | 5 | 43 | 468 | 963 |
| 241 | race relations | 3 | 43 | 647 | 724 |
| 249 | Nutrition physiology | 7 | 42 | 511 | 1486 |
| 249 | ethnic groups | 1 | 42 | 702 | 559 |
| 251 | Africa | 3 | 41 | 2022 | 1924 |
| 251 | drug addiction | 3 | 41 | 1454 | 2145 |
| 253 | Research Design | 3 | 40 | 1634 | 2311 |
| 253 | Cognitive neuroscience | 2 | 40 | 1355 | 1721 |
| 253 | feeding behavior | 1 | 40 | 1552 | 1504 |
| 253 | Appetite | 1 | 40 | 1390 | 1362 |
| 257 | Cytology | 3 | 39 | 5228 | 6967 |
| 257 | complementary therapies | 3 | 39 | 2539 | 3343 |
| 257 | individual differences | 1 | 39 | 528 | 569 |
| 257 | Physical fitness | 2 | 39 | 1550 | 1763 |
| 257 | internet | 5 | 39 | 1040 | 1771 |
| 262 | Mathematical Physics | 2 | 37 | 4031 | 3320 |
| 262 | Teaching | 9 | 37 | 1088 | 2350 |
| 262 | primary prevention | 3 | 37 | 536 | 913 |
| 265 | Geophysics | 1 | 36 | 5842 | 5224 |
| 265 | Adult Education | 5 | 36 | 457 | 704 |
| 265 | Atmospheric Chemistry | 1 | 36 | 1631 | 1821 |
| 265 | Atmospheric Physics | 1 | 36 | 2783 | 2654 |
| 265 | health behavior | 3 | 36 | 1236 | 1946 |
| 265 | research and development | 2 | 36 | 493 | 651 |
| 265 | Entomology | 2 | 36 | 3389 | 3150 |
| 272 | Organic Chemistry | 1 | 35 | 5024 | 4564 |
| 272 | ovary | 1 | 35 | 523 | 484 |
| 272 | Tropical Medicine | 2 | 35 | 2956 | 3177 |
| 275 | Analytical Chemistry | 2 | 34 | 6019 | 6733 |
| 275 | Sexuality | 6 | 34 | 185 | 493 |
| 277 | Socialization | 2 | 33 | 711 | 1069 |
| 277 | role | 2 | 33 | 577 | 927 |
| 279 | Community Psychology | 2 | 32 | 819 | 1104 |
| 279 | Community Psychiatry | 4 | 32 | 1118 | 2187 |
| 279 | Telemedicine | 2 | 32 | 650 | 1024 |
| 279 | Autism | 2 | 32 | 1034 | 1570 |
| 279 | international cooperation | 4 | 32 | 556 | 1254 |
| 284 | Knowledge management | 3 | 31 | 660 | 717 |
| 284 | Hospitals | 2 | 31 | 1169 | 1450 |
| 284 | Asia | 1 | 31 | 5695 | 4134 |
| 284 | Population | 1 | 31 | 2266 | 1870 |
| 284 | Population Dynamics | 1 | 31 | 460 | 387 |
| 289 | Radiology | 1 | 30 | 3292 | 2612 |
| 289 | Radiography | 1 | 30 | 1398 | 1334 |
| 289 | Morphology | 1 | 30 | 1649 | 1279 |
| 289 | Diabetes mellitus | 3 | 30 | 2779 | 4410 |
| 289 | economic policy | 4 | 30 | 2618 | 3149 |
| 294 | Medical Ethics | 2 | 29 | 1805 | 1904 |
| 294 | Parasitology | 1 | 29 | 4234 | 4020 |
| 294 | War and Society | 1 | 29 | 428 | 475 |
| 294 | Parasitic Diseases | 1 | 29 | 3929 | 4022 |
| 294 | warfare | 1 | 29 | 634 | 698 |
| 294 | peace | 1 | 29 | 965 | 821 |
| 294 | Parasites | 1 | 29 | 3013 | 2909 |
| 294 | finance | 2 | 29 | 3082 | 3098 |
| 302 | Cell Biology | 2 | 28 | 5763 | 7295 |
| 302 | drug resistance | 1 | 28 | 1731 | 1798 |
| 302 | human development | 3 | 28 | 872 | 1550 |
| 302 | adulthood | 3 | 28 | 101 | 231 |
| 306 | Nanotechnology | 1 | 27 | 7759 | 7754 |
| 306 | food service | 4 | 27 | 71 | 134 |
| 308 | Bioengineering | 1 | 26 | 7590 | 7856 |
| 308 | Biocompatible Materials | 1 | 26 | 6045 | 6649 |
| 308 | chronic disease | 1 | 26 | 832 | 862 |
| 308 | Mental illness | 3 | 26 | 2692 | 4271 |
| 312 | Polymers | 3 | 25 | 5192 | 6671 |
| 312 | Industrial Sociology | 1 | 25 | 381 | 387 |
| 312 | Risk assessment | 2 | 25 | 955 | 1263 |
| 312 | Alternative Medicine | 2 | 25 | 2845 | 3799 |
| 312 | Bacteriology | 2 | 25 | 2837 | 4162 |
| 312 | Health risk communication | 2 | 25 | 108 | 197 |
| 312 | risk factors | 2 | 25 | 1152 | 1564 |
| 312 | Investment analysis | 2 | 25 | 1154 | 1429 |
| 312 | disabilities | 2 | 25 | 1186 | 1608 |
| 312 | social science | 1 | 25 | 345 | 446 |
| 312 | Health Risk Assessment | 2 | 25 | 730 | 1032 |
| 312 | city planning | 2 | 25 | 2301 | 2739 |
| 312 | Jurisprudence | 2 | 25 | 1439 | 1670 |
| 325 | Embryology | 4 | 24 | 1750 | 3273 |
| 325 | Developmental Biology | 4 | 24 | 2288 | 4260 |
| 325 | Dyslexia | 1 | 24 | 327 | 371 |
| 325 | Materials | 1 | 24 | 8893 | 8495 |
| 325 | Communication in marketing | 1 | 24 | 376 | 422 |
| 325 | polymerization | 2 | 24 | 4999 | 5675 |
| 331 | Mass Media | 1 | 23 | 1812 | 1002 |
| 331 | Smoking | 2 | 23 | 1172 | 1830 |
| 333 | Magnetic Resonance Imaging | 1 | 22 | 1239 | 1267 |
| 333 | Diagnostic Imaging | 1 | 22 | 4190 | 3961 |
| 333 | Biomechanics | 1 | 22 | 3021 | 2989 |
| 333 | Crisis Intervention | 1 | 22 | 407 | 475 |
| 337 | Public Relations | 2 | 21 | 680 | 865 |
| 337 | Bioethics | 1 | 21 | 1908 | 1700 |
| 337 | Feeding and Eating Disorders | 1 | 21 | 1623 | 1820 |
| 337 | nursing ethics | 1 | 21 | 563 | 679 |
| 337 | Statistical physics | 3 | 21 | 4101 | 5239 |
| 337 | Developing countries | 5 | 21 | 2290 | 4701 |
| 343 | Immunology | 3 | 20 | 4711 | 6948 |
| 343 | Vocational Education | 2 | 20 | 742 | 984 |
| 343 | polar regions | 1 | 20 | 1371 | 1436 |
| 343 | child sexual abuse | 1 | 20 | 349 | 437 |
| 343 | Dementia | 4 | 20 | 1614 | 2175 |
| 348 | Food service management | 8 | 19 | 174 | 1102 |
| 348 | ethanol | 1 | 19 | 1128 | 1285 |
| 350 | Biophysics | 3 | 18 | 7055 | 9810 |
| 350 | Econometrics | 1 | 18 | 2373 | 2145 |
| 350 | Behavioral research | 1 | 18 | 1193 | 1201 |
| 350 | sadness | 2 | 18 | 328 | 600 |
| 350 | software | 1 | 18 | 2018 | 2409 |
| 350 | death | 2 | 18 | 460 | 699 |
| 350 | health planning | 3 | 18 | 2739 | 4432 |
| 350 | antisocial personality disorder | 2 | 18 | 328 | 600 |
| 350 | sexual behavior | 4 | 18 | 661 | 1605 |
| 359 | Statistics | 1 | 17 | 4731 | 4223 |
| 359 | Mathematics | 4 | 17 | 6267 | 8008 |
| 359 | Algebra | 2 | 17 | 1964 | 1752 |
| 359 | Phonetics | 1 | 17 | 646 | 713 |
| 359 | environmental protection | 2 | 17 | 5154 | 7202 |
| 359 | Transnational corporations | 1 | 17 | 756 | 944 |
| 359 | Biometrics | 1 | 17 | 2136 | 2172 |
| 359 | technical education | 1 | 17 | 1029 | 1001 |
| 367 | Orthopedics | 1 | 16 | 3048 | 3361 |
| 367 | Linguistics | 1 | 16 | 2851 | 2183 |
| 367 | Public Health Administration | 2 | 16 | 615 | 764 |
| 367 | Psycholinguistics | 1 | 16 | 1743 | 1971 |
| 367 | Environmental Psychology | 1 | 16 | 758 | 1107 |
| 367 | preventive medicine | 2 | 16 | 2164 | 3467 |
| 367 | Cognition | 1 | 16 | 3064 | 3534 |
| 374 | Geriatric Medicine | 1 | 15 | 361 | 493 |
| 374 | Global Health | 2 | 15 | 1812 | 2755 |
| 374 | Plant Ecology | 1 | 15 | 3025 | 3733 |
| 374 | Nuclear family | 1 | 15 | 348 | 352 |
| 374 | plant communities | 1 | 15 | 1921 | 2529 |
| 379 | Pharmacy | 1 | 14 | 4217 | 4806 |
| 379 | Database Management | 2 | 14 | 1121 | 1674 |
| 379 | Religion and Psychology | 1 | 14 | 1191 | 1264 |
| 379 | Pharmacy management | 1 | 14 | 766 | 771 |
| 379 | Investments | 2 | 14 | 900 | 1366 |
| 384 | Gender Studies | 1 | 13 | 1013 | 1204 |
| 384 | Emergency Medical Services | 2 | 13 | 1343 | 2208 |
| 384 | Clinical Trials | 1 | 13 | 1438 | 1714 |
| 384 | Queer Studies | 1 | 13 | 626 | 866 |
| 384 | Freshwater Ecology | 1 | 13 | 616 | 686 |
| 384 | Depression | 1 | 13 | 844 | 1306 |
| 384 | Emergency Medicine | 2 | 13 | 2498 | 3514 |
| 384 | Cognitive Behavioral Therapy | 1 | 13 | 500 | 681 |
| 384 | Anxiety Disorders | 1 | 13 | 1107 | 1652 |
| 384 | Anxiety | 1 | 13 | 1110 | 1651 |
| 384 | Neuromuscular diseases | 1 | 13 | 1438 | 1831 |
| 384 | Therapeutics | 1 | 13 | 3674 | 4621 |
| 384 | drug therapy | 2 | 13 | 3706 | 5490 |
| 397 | Philosophy | 4 | 12 | 1721 | 1818 |
| 397 | Reproductive health | 2 | 12 | 1266 | 2261 |
| 397 | Portfolio Management | 2 | 12 | 481 | 657 |
| 397 | Birth control | 1 | 12 | 1049 | 1525 |
| 401 | Criminology | 1 | 11 | 1691 | 1805 |
| 401 | Medical Microbiology | 1 | 11 | 4532 | 5889 |
| 401 | Agronomy | 1 | 11 | 1161 | 1609 |
| 401 | Divorce | 1 | 11 | 323 | 382 |
| 401 | Feminism | 1 | 11 | 1152 | 1174 |
| 401 | dietary supplements | 1 | 11 | 1659 | 2419 |
| 401 | Cell differentiation | 2 | 11 | 2581 | 4262 |
| 401 | Gender identity | 1 | 11 | 660 | 651 |
| 401 | Mycology | 1 | 11 | 3021 | 3642 |
| 401 | visualization | 3 | 11 | 2211 | 2583 |
| 401 | Condensed Matter | 4 | 11 | 3475 | 5323 |
| 412 | Engineering | 4 | 10 | 5028 | 8709 |
| 412 | Solid State Physics | 3 | 10 | 4238 | 6176 |
| 412 | Organizational change | 1 | 10 | 1479 | 1834 |
| 412 | Socioeconomic Factors | 3 | 10 | 940 | 2570 |
| 412 | Social policy | 5 | 10 | 885 | 2297 |
| 412 | Radicalism | 1 | 10 | 124 | 110 |
| 412 | Europe | 1 | 10 | 6532 | 6868 |
| 419 | Cognitive Psychology | 1 | 9 | 841 | 943 |
| 419 | Ethics | 2 | 9 | 1492 | 2558 |
| 419 | Phenomenology | 1 | 9 | 544 | 412 |
| 419 | Theology | 17 | 9 | 288 | 730 |
| 419 | Philosophy of Mind | 1 | 9 | 511 | 578 |
| 419 | Total Quality Management | 2 | 9 | 799 | 1671 |
| 419 | Psychoanalysis | 5 | 9 | 337 | 716 |
| 419 | Professional ethics | 2 | 9 | 429 | 1059 |
| 419 | hazard mitigation | 2 | 9 | 1352 | 2653 |
| 419 | International Business | 1 | 9 | 470 | 661 |
| 419 | natural disasters | 2 | 9 | 1871 | 3361 |
| 430 | Higher Education | 3 | 8 | 625 | 1444 |
| 430 | Social Issues | 1 | 8 | 510 | 817 |
| 430 | Plant physiology | 2 | 8 | 2822 | 4543 |
| 430 | civilization | 6 | 8 | 1089 | 1379 |
| 430 | Vocational guidance | 3 | 8 | 966 | 2161 |
| 430 | Psychiatric hospitals | 2 | 8 | 534 | 849 |
| 436 | Neurochemistry | 1 | 7 | 4146 | 5415 |
| 436 | Economic Development | 1 | 7 | 3312 | 4168 |
| 436 | Educational Sociology | 1 | 7 | 745 | 971 |
| 436 | Sports Medicine | 5 | 7 | 2607 | 5097 |
| 436 | Operations Research | 1 | 7 | 3744 | 4356 |
| 436 | health services accessibility | 1 | 7 | 2114 | 2935 |
| 436 | Adoption | 1 | 7 | 253 | 369 |
| 436 | Nonlinear Dynamics | 1 | 7 | 3431 | 4191 |
| 436 | Visual Literacy | 2 | 7 | 38 | 88 |
| 436 | digital preservation | 9 | 7 | 11 | 368 |
| 436 | pain management | 1 | 7 | 1506 | 1995 |
| 436 | Development | 1 | 7 | 1623 | 2362 |
| 436 | United Kingdom | 1 | 7 | 3402 | 4279 |
| 436 | Economic Assistance | 1 | 7 | 1479 | 2155 |
| 436 | World Wide Web | 1 | 7 | 973 | 1168 |
| 436 | world | 1 | 7 | 1500 | 2389 |
| 452 | Materials Science | 10 | 6 | 3430 | 8658 |
| 452 | Speech-Language Pathology | 2 | 6 | 421 | 974 |
| 452 | Language Disorders | 2 | 6 | 1231 | 2196 |
| 452 | Teratology | 2 | 6 | 467 | 1077 |
| 452 | Community Health Nursing | 1 | 6 | 179 | 329 |
| 452 | Microbial Ecology | 2 | 6 | 3325 | 5949 |
| 452 | Biomass Energy | 1 | 6 | 4271 | 5589 |
| 452 | Image Processing | 8 | 6 | 1430 | 4660 |
| 452 | speech therapy | 2 | 6 | 593 | 1164 |
| 452 | Speech Perception | 1 | 6 | 515 | 860 |
| 452 | Behaviorism | 1 | 6 | 187 | 298 |
| 452 | auditory perception | 1 | 6 | 662 | 1047 |
| 452 | physical therapy techniques | 2 | 6 | 237 | 461 |
| 452 | civil rights | 3 | 6 | 435 | 1067 |
| 452 | Evidence-Based Medicine | 2 | 6 | 2009 | 3652 |
| 452 | Speech Disorders | 2 | 6 | 1464 | 2566 |
| 452 | Oral communication | 1 | 6 | 881 | 1294 |
| 452 | abnormalities | 2 | 6 | 302 | 745 |
| 452 | Biomass | 1 | 6 | 1355 | 2336 |
| 452 | Imaging systems | 8 | 6 | 373 | 2067 |
| 452 | Cognitive Learning | 1 | 6 | 283 | 444 |
| 452 | planning | 1 | 6 | 1581 | 2288 |
| 452 | Speech | 1 | 6 | 1720 | 2364 |
| 452 | econometric models | 1 | 6 | 1171 | 1655 |
| 452 | autism spectrum disorder | 1 | 6 | 171 | 332 |
| 477 | Experimental Psychology | 1 | 5 | 1030 | 1330 |
| 477 | Political Sociology | 2 | 5 | 605 | 1151 |
| 477 | intergroup relations | 1 | 5 | 378 | 630 |
| 477 | Transport | 2 | 5 | 944 | 1968 |
| 477 | Sea | 2 | 5 | 852 | 1748 |
| 477 | built environment | 1 | 5 | 42 | 83 |
| 477 | Fishery resources | 2 | 5 | 956 | 1907 |
| 477 | China | 2 | 5 | 4319 | 7201 |
| 477 | Middle East | 1 | 5 | 2052 | 2405 |
| 477 | Alzheimer's disease | 3 | 5 | 1860 | 2841 |
| 477 | Steroids | 1 | 5 | 1994 | 2897 |
| 477 | Agriculture | 1 | 5 | 4499 | 5693 |
| 477 | Fisheries | 2 | 5 | 2419 | 3943 |
| 490 | Artificial Intelligence | 1 | 4 | 6405 | 8047 |
| 490 | Children's Literature | 1 | 4 | 216 | 235 |
| 490 | emergency management | 1 | 4 | 1923 | 3058 |
| 490 | Ethnic relations | 1 | 4 | 1220 | 1468 |
| 490 | Nationalism | 1 | 4 | 690 | 932 |
| 490 | Biodiversity conservation | 1 | 4 | 2983 | 4226 |
| 490 | Social integration | 2 | 4 | 36 | 50 |
| 490 | Stem cells | 1 | 4 | 3034 | 4185 |
| 490 | data collection | 1 | 4 | 2521 | 3903 |
| 490 | Group Identity | 1 | 4 | 195 | 346 |
| 490 | church and state | 1 | 4 | 268 | 105 |
| 501 | Genetic Counseling | 1 | 3 | 723 | 1162 |
| 501 | Photochemistry | 2 | 3 | 2633 | 4803 |
| 501 | Metabolic diseases | 1 | 3 | 4519 | 6154 |
| 501 | Technological Innovations | 1 | 3 | 2124 | 3289 |
| 501 | Ferroelectricity | 1 | 3 | 1654 | 2046 |
| 501 | Photobiology | 2 | 3 | 2082 | 3918 |
| 501 | journals | 3 | 3 | 173 | 207 |
| 501 | North America | 1 | 3 | 1985 | 2929 |
| 501 | educational innovations | 3 | 3 | 587 | 1626 |
| 501 | Diabetes | 1 | 3 | 4209 | 5985 |
| 511 | Electrical Engineering | 8 | 2 | 2713 | 6812 |
| 511 | Computer Graphics | 1 | 2 | 2997 | 4314 |
| 511 | Systems Analysis | 1 | 2 | 2233 | 3521 |
| 511 | Environmental Economics | 2 | 2 | 634 | 1670 |
| 511 | Human Rights | 1 | 2 | 1253 | 1888 |
| 511 | Crystallization | 1 | 2 | 1095 | 1583 |
| 511 | Romanticism | 1 | 2 | 354 | 291 |
| 511 | History of Nursing | 2 | 2 | 52 | 106 |
| 511 | disarmament | 1 | 2 | 400 | 612 |
| 511 | Crystallography | 1 | 2 | 2965 | 3567 |
| 511 | Business Intelligence | 1 | 2 | 152 | 324 |
| 511 | System analysis | 1 | 2 | 4572 | 6463 |
| 511 | France | 3 | 2 | 520 | 1077 |
| 511 | Osteoporosis | 1 | 2 | 882 | 1624 |
| 511 | Bone diseases | 1 | 2 | 1110 | 1864 |
| 511 | minority groups | 1 | 2 | 183 | 359 |
| 511 | strategy | 1 | 2 | 484 | 654 |
| 528 | Law | 1 | 1 | 2912 | 3375 |
| 528 | Anthropology | 1 | 1 | 3275 | 4342 |
| 528 | Environmental Engineering | 1 | 1 | 6929 | 9626 |
| 528 | Astronomy | 1 | 1 | 4231 | 5568 |
| 528 | Ergonomics | 1 | 1 | 2128 | 3074 |
| 528 | Occupational Health | 4 | 1 | 1249 | 3939 |
| 528 | American Literature | 8 | 1 | 343 | 775 |
| 528 | Political Psychology | 1 | 1 | 627 | 1108 |
| 528 | Criminal psychology | 2 | 1 | 1055 | 2171 |
| 528 | Educational Technology | 1 | 1 | 3053 | 4784 |
| 528 | Industrial Safety | 4 | 1 | 1221 | 4012 |
| 528 | Psychometrics | 1 | 1 | 815 | 1343 |
| 528 | Statistical Mechanics | 1 | 1 | 2221 | 3025 |
| 528 | industrial hygiene | 4 | 1 | 1243 | 3952 |
| 528 | police psychology | 2 | 1 | 149 | 542 |
| 528 | Religion and Culture | 1 | 1 | 711 | 1169 |
| 528 | Qualitative Research | 1 | 1 | 1019 | 1828 |
| 528 | Randomized Controlled Trials | 1 | 1 | 2584 | 4146 |
| 528 | Protozoa | 1 | 1 | 915 | 1514 |
| 528 | Marine resources | 1 | 1 | 1424 | 2453 |
| 528 | Crystal growth | 1 | 1 | 1816 | 2626 |
| 528 | Computer Literacy | 1 | 1 | 525 | 974 |
| 528 | crime | 2 | 1 | 927 | 1812 |
| 528 | Australia | 1 | 1 | 4126 | 6217 |
| 528 | Pollution | 1 | 1 | 8671 | 11716 |
| 553 | Arts | 1 | 0 | 1129 | 1593 |
| 553 | Literature | 8 | 0 | 597 | 1687 |
| 553 | History | 2 | 0 | 1615 | 2203 |
| 553 | Hematology | 1 | 0 | 5576 | 6897 |
| 553 | Chemotherapy | 1 | 0 | 3113 | 4698 |
| 553 | Autobiography | 1 | 0 | 207 | 337 |
| 553 | Engineering Ethics | 1 | 0 | 473 | 1073 |
| 553 | Music | 3 | 0 | 1126 | 2800 |
| 553 | Social History | 1 | 0 | 1051 | 1416 |
| 553 | Control Theory | 1 | 0 | 2861 | 4112 |
| 553 | Infections | 1 | 0 | 2509 | 4058 |
| 553 | Political Ecology | 1 | 0 | 190 | 429 |
| 553 | Popular culture | 1 | 0 | 1051 | 1503 |
| 553 | Language and Culture | 1 | 0 | 373 | 711 |
| 553 | Art | 1 | 0 | 911 | 1082 |
| 553 | philology | 1 | 0 | 1342 | 1420 |
| 553 | Calorimetry | 1 | 0 | 2207 | 3415 |
| 553 | Sound | 1 | 0 | 1780 | 2688 |
| 553 | infection | 1 | 0 | 3434 | 5325 |
| 553 | Brain | 1 | 0 | 4582 | 6381 |
| 553 | psychoanalytic therapy | 1 | 0 | 252 | 436 |
| 553 | Reading | 1 | 0 | 1028 | 1684 |
| 553 | manuscripts | 2 | 0 | 61 | 100 |
| 553 | migration policy | 1 | 0 | 478 | 999 |
| 553 | Thermal analysis | 1 | 0 | 2207 | 3415 |
| 553 | language | 3 | 0 | 897 | 2296 |
