| 1 | Medicine | 35 | 4.2K | 4884 | 2523 |
| 2 | United States | 235 | 4.1K | 401 | 604 |
| 3 | Science | 29 | 3.8K | 5407 | 3489 |
| 4 | management | 19 | 3.4K | 1546 | 576 |
| 5 | Nutrition | 68 | 3.3K | 1002 | 757 |
| 6 | Biology | 76 | 3.2K | 2881 | 3523 |
| 7 | Diet | 54 | 2.9K | 448 | 425 |
| 8 | Physics | 22 | 2.8K | 5492 | 3871 |
| 9 | Psychology | 46 | 2.7K | 1429 | 933 |
| 10 | Natural history | 7 | 2.6K | 3733 | 2579 |
| 11 | Physical Therapy | 38 | 2.3K | 291 | 204 |
| 12 | human behavior | 10 | 1.8K | 1582 | 731 |
| 13 | Behavior | 26 | 1.8K | 1258 | 934 |
| 14 | Psychiatry | 23 | 1.6K | 2161 | 1515 |
| 15 | Business Ethics | 6 | 1.3K | 665 | 237 |
| 15 | Psychophysiology | 3 | 1.3K | 3533 | 1111 |
| 17 | Financial management | 3 | 1.2K | 589 | 80 |
| 18 | Probability | 1 | 1.2K | 1264 | 82 |
| 18 | Risk Management | 1 | 1.2K | 1698 | 86 |
| 18 | Risk | 1 | 1.2K | 1230 | 94 |
| 21 | marketing | 5 | 1.1K | 1646 | 555 |
| 22 | Sociology | 24 | 1.1K | 1096 | 732 |
| 23 | Hypertension | 4 | 971 | 1897 | 938 |
| 24 | Cardiovascular system | 3 | 970 | 2103 | 978 |
| 25 | Library Science | 160 | 937 | 23 | 57 |
| 26 | Social Psychology | 22 | 926 | 809 | 745 |
| 27 | Social work | 55 | 837 | 226 | 251 |
| 28 | Child psychology | 17 | 811 | 703 | 673 |
| 29 | Public Health | 28 | 780 | 2459 | 2605 |
| 29 | Environmental Health | 7 | 780 | 4700 | 2669 |
| 31 | child abuse | 7 | 770 | 581 | 296 |
| 32 | Second Language Acquisition | 2 | 753 | 261 | 52 |
| 33 | Oncology | 5 | 728 | 2315 | 1664 |
| 34 | Pediatrics | 8 | 727 | 2135 | 1412 |
| 35 | Information Science | 174 | 704 | 72 | 819 |
| 36 | rehabilitation | 15 | 673 | 1125 | 816 |
| 37 | Business | 5 | 651 | 2052 | 959 |
| 38 | Mental Health | 17 | 650 | 713 | 453 |
| 39 | Social problems | 19 | 647 | 153 | 183 |
| 40 | Aging | 50 | 636 | 734 | 1278 |
| 41 | Chemistry | 26 | 622 | 5097 | 5869 |
| 42 | Cancer | 9 | 608 | 2967 | 2287 |
| 43 | Molecular Biology | 6 | 576 | 7476 | 5385 |
| 44 | Malaria | 12 | 560 | 365 | 269 |
| 45 | Genetics | 7 | 538 | 3645 | 2894 |
| 46 | Organizational Sociology | 2 | 527 | 483 | 66 |
| 47 | Education | 26 | 504 | 1500 | 1215 |
| 47 | Adolescent | 18 | 504 | 964 | 893 |
| 49 | Research | 26 | 496 | 4680 | 5737 |
| 50 | psychotherapy | 11 | 465 | 812 | 717 |
| 51 | Economic History | 13 | 459 | 2138 | 1232 |
| 52 | Geriatrics | 37 | 443 | 969 | 1557 |
| 53 | Learning | 3 | 441 | 1633 | 666 |
| 54 | Child welfare | 14 | 438 | 454 | 360 |
| 55 | Child | 14 | 428 | 1464 | 1210 |
| 56 | Dietetics | 29 | 402 | 187 | 275 |
| 57 | Gerontology | 36 | 401 | 540 | 856 |
| 58 | Environment | 10 | 396 | 3650 | 4419 |
| 59 | Obesity | 8 | 385 | 1642 | 1510 |
| 60 | Public Policy | 48 | 341 | 290 | 967 |
| 61 | Family | 22 | 317 | 302 | 443 |
| 62 | Small Business | 5 | 308 | 632 | 639 |
| 63 | commerce | 3 | 304 | 1897 | 834 |
| 64 | Nursing | 25 | 296 | 581 | 736 |
| 65 | Women's health | 9 | 292 | 831 | 675 |
| 66 | Neurology | 9 | 291 | 4314 | 4431 |
| 67 | Environmental Toxicology | 1 | 290 | 4532 | 1961 |
| 68 | adolescence | 10 | 285 | 518 | 592 |
| 69 | Child Development | 11 | 284 | 1250 | 1414 |
| 70 | Special Education | 7 | 283 | 547 | 284 |
| 71 | counseling | 13 | 281 | 678 | 740 |
| 72 | Intellectual disability | 6 | 270 | 681 | 468 |
| 73 | Mental Disorders | 8 | 254 | 2528 | 2674 |
| 73 | Mental Health Services | 10 | 254 | 789 | 725 |
| 73 | genome | 2 | 254 | 2553 | 1766 |
| 76 | behavior therapy | 26 | 246 | 263 | 578 |
| 77 | Adolescent Medicine | 5 | 243 | 564 | 781 |
| 78 | personality | 6 | 236 | 1110 | 1136 |
| 78 | violence | 7 | 236 | 654 | 612 |
| 80 | genre | 7 | 235 | 78 | 16 |
| 81 | Epidemiology | 8 | 234 | 3199 | 3139 |
| 81 | conflict management | 13 | 234 | 77 | 151 |
| 83 | Developmental Psychology | 7 | 231 | 772 | 840 |
| 84 | Social Sciences | 13 | 229 | 2111 | 1754 |
| 85 | Maternal health services | 6 | 226 | 301 | 241 |
| 86 | Archives | 17 | 214 | 23 | 14 |
| 87 | Social welfare | 9 | 211 | 303 | 268 |
| 88 | Physiology | 5 | 210 | 4349 | 3814 |
| 89 | Post-traumatic stress disorder | 2 | 201 | 1146 | 636 |
| 90 | Youth | 6 | 199 | 494 | 511 |
| 91 | Entrepreneurship | 7 | 194 | 652 | 881 |
| 91 | families | 16 | 194 | 307 | 462 |
| 93 | Information Technology | 56 | 192 | 287 | 1440 |
| 94 | Geriatric Psychiatry | 4 | 189 | 1193 | 932 |
| 95 | older people | 36 | 188 | 427 | 890 |
| 96 | Family Therapy | 5 | 187 | 640 | 410 |
| 97 | Botany | 9 | 184 | 2965 | 3501 |
| 98 | Health Education | 13 | 183 | 1051 | 1424 |
| 99 | Genomics | 3 | 179 | 4260 | 3304 |
| 100 | Pediatric Nursing | 51 | 176 | 25 | 214 |
| 101 | Visual Perception | 3 | 174 | 2363 | 1725 |
| 101 | Memory | 3 | 174 | 2535 | 1907 |
| 101 | Attention | 3 | 174 | 2458 | 1768 |
| 101 | Perception | 3 | 174 | 2591 | 1882 |
| 105 | Water pollution | 1 | 162 | 4673 | 2769 |
| 105 | Water | 1 | 162 | 4408 | 2745 |
| 107 | Muscles | 7 | 159 | 713 | 994 |
| 108 | health services | 7 | 158 | 820 | 821 |
| 109 | Clinical Psychology | 7 | 157 | 1183 | 1629 |
| 110 | African Americans | 2 | 156 | 267 | 58 |
| 110 | African American | 2 | 156 | 197 | 47 |
| 112 | libraries | 47 | 154 | 78 | 301 |
| 113 | Educational Psychology | 11 | 151 | 796 | 1130 |
| 114 | Endocrinology | 2 | 150 | 4594 | 3529 |
| 115 | Andrology | 1 | 147 | 1408 | 590 |
| 115 | Androgens | 1 | 147 | 553 | 273 |
| 115 | family violence | 5 | 147 | 340 | 377 |
| 118 | Information Systems | 16 | 146 | 496 | 1224 |
| 118 | Sarcopenia | 6 | 146 | 240 | 520 |
| 120 | Biochemistry | 10 | 145 | 6896 | 8502 |
| 120 | Ecology | 11 | 145 | 4589 | 7133 |
| 120 | nursing education | 9 | 145 | 29 | 30 |
| 120 | Documentation | 16 | 145 | 80 | 238 |
| 124 | Molecular evolution | 3 | 142 | 2232 | 1875 |
| 124 | biological evolution | 3 | 142 | 2606 | 2514 |
| 126 | Occupational Therapy | 9 | 138 | 639 | 522 |
| 127 | Decision making | 1 | 137 | 3214 | 1269 |
| 128 | Obstetric Nursing | 49 | 136 | 18 | 164 |
| 128 | negotiation | 11 | 136 | 9 | 33 |
| 130 | Mass Spectrometry | 4 | 135 | 1342 | 1152 |
| 131 | Health Policy | 12 | 133 | 1410 | 2346 |
| 132 | Health | 8 | 132 | 1781 | 2303 |
| 133 | Cognitive Therapy | 4 | 130 | 610 | 559 |
| 134 | Regional Planning | 3 | 129 | 1829 | 1273 |
| 134 | child mental health | 3 | 129 | 527 | 335 |
| 136 | Microbiology | 12 | 127 | 4678 | 7502 |
| 137 | Communication | 5 | 126 | 1863 | 1515 |
| 138 | Economics | 10 | 125 | 2997 | 3136 |
| 138 | Surface Chemistry | 2 | 125 | 4893 | 3740 |
| 138 | Colloids | 2 | 125 | 4783 | 3897 |
| 141 | Neurophysiology | 3 | 121 | 3515 | 3459 |
| 142 | sex crimes | 5 | 118 | 511 | 546 |
| 143 | Genes | 2 | 116 | 1773 | 1179 |
| 144 | Agricultural Chemistry | 2 | 114 | 3305 | 2489 |
| 145 | Organizational Behavior | 4 | 104 | 549 | 680 |
| 146 | Neurobiology | 1 | 103 | 3294 | 2487 |
| 147 | Food | 4 | 102 | 3414 | 3688 |
| 148 | Student Health Services | 3 | 100 | 303 | 253 |
| 149 | Elderly | 31 | 99 | 374 | 793 |
| 150 | Cultural diversity | 1 | 98 | 339 | 210 |
| 150 | Renewable Energy Sources | 1 | 98 | 4540 | 3708 |
| 150 | Classification | 6 | 98 | 156 | 236 |
| 150 | cataloging | 6 | 98 | 76 | 16 |
| 150 | cultural pluralism | 1 | 98 | 793 | 267 |
| 155 | ethnicity | 4 | 93 | 683 | 490 |
| 156 | Health Services Research | 6 | 92 | 1559 | 1974 |
| 157 | Body Image | 2 | 91 | 302 | 305 |
| 158 | Race | 3 | 89 | 65 | 54 |
| 159 | Health Services Administration | 6 | 87 | 883 | 1328 |
| 160 | Social support | 4 | 86 | 150 | 221 |
| 160 | Social environment | 4 | 86 | 181 | 251 |
| 162 | Obstetrics | 3 | 85 | 3303 | 2994 |
| 162 | Primary health care | 4 | 85 | 2013 | 2075 |
| 164 | elder abuse | 4 | 84 | 286 | 384 |
| 165 | Metabolism | 1 | 82 | 5184 | 4198 |
| 165 | Enteral nutrition | 1 | 82 | 1897 | 1380 |
| 165 | Parenteral nutrition | 1 | 82 | 2224 | 1616 |
| 168 | Animal Behavior | 1 | 81 | 3475 | 2701 |
| 168 | Ethology | 1 | 81 | 2779 | 2315 |
| 168 | medical education | 6 | 81 | 1712 | 2148 |
| 171 | Pharmacology | 11 | 77 | 4007 | 6778 |
| 171 | Substance Abuse | 5 | 77 | 1421 | 1777 |
| 173 | Medical Anthropology | 4 | 76 | 1384 | 2145 |
| 173 | psychopathology | 2 | 76 | 479 | 475 |
| 175 | Disability Studies | 3 | 75 | 331 | 230 |
| 175 | Disability Law | 3 | 75 | 195 | 182 |
| 177 | Infertility | 1 | 74 | 2087 | 1602 |
| 177 | fertility | 1 | 74 | 2198 | 1699 |
| 179 | Paleontology | 3 | 72 | 1561 | 1378 |
| 179 | Mineralogy | 2 | 72 | 1931 | 1545 |
| 179 | Sleep Disorders | 4 | 72 | 1905 | 2126 |
| 179 | Sleep | 4 | 72 | 1919 | 2131 |
| 183 | Psychiatric Nursing | 4 | 71 | 654 | 717 |
| 183 | Patient education | 3 | 71 | 776 | 1035 |
| 183 | children | 4 | 71 | 524 | 695 |
| 186 | behavioral medicine | 2 | 70 | 2099 | 2235 |
| 186 | Cognitive Science | 3 | 70 | 1795 | 2064 |
| 188 | Health promotion | 4 | 69 | 1690 | 2100 |
| 188 | organization | 6 | 69 | 558 | 1049 |
| 188 | Law enforcement | 1 | 69 | 211 | 128 |
| 188 | police | 1 | 69 | 764 | 293 |
| 192 | Marriage | 5 | 68 | 404 | 621 |
| 193 | Plant Taxonomy | 2 | 67 | 634 | 526 |
| 194 | Neonatology | 2 | 66 | 1046 | 901 |
| 195 | Growth | 3 | 65 | 1480 | 2151 |
| 195 | women | 12 | 65 | 324 | 691 |
| 197 | Public Administration | 1 | 62 | 2746 | 1350 |
| 197 | Politics | 3 | 62 | 828 | 500 |
| 197 | government | 3 | 62 | 905 | 660 |
| 200 | Political Science | 3 | 61 | 2209 | 1542 |
| 200 | behavior modification | 6 | 61 | 308 | 662 |
| 200 | pain | 3 | 61 | 1835 | 2229 |
| 203 | Palliative Care | 5 | 60 | 887 | 1197 |
| 203 | hospice care | 5 | 60 | 519 | 726 |
| 203 | Ethnology | 2 | 60 | 2281 | 1477 |
| 203 | industrial relations | 2 | 60 | 1172 | 870 |
| 207 | Environmental Policy | 2 | 59 | 4786 | 5208 |
| 207 | Human-Computer Interaction | 1 | 59 | 2997 | 1918 |
| 207 | Autism spectrum disorders | 1 | 59 | 179 | 122 |
| 210 | Toxicology | 9 | 58 | 3755 | 6779 |
| 211 | Energy Policy | 1 | 57 | 4627 | 4139 |
| 211 | alcoholism | 4 | 57 | 1664 | 2307 |
| 211 | energy resources | 1 | 57 | 2487 | 2599 |
| 214 | Eating Disorders | 3 | 56 | 1060 | 1329 |
| 214 | scientific societies | 4 | 56 | 867 | 1309 |
| 216 | Sports | 7 | 55 | 1644 | 2309 |
| 217 | Hydraulic Engineering | 2 | 54 | 1394 | 1242 |
| 217 | Natural resources | 2 | 54 | 1096 | 1226 |
| 217 | Hydrodynamics | 2 | 54 | 800 | 872 |
| 217 | Corporate governance | 2 | 54 | 858 | 864 |
| 221 | Continuing Education | 5 | 53 | 326 | 365 |
| 222 | Anatomy | 4 | 51 | 2219 | 2977 |
| 223 | Regional Development | 1 | 50 | 572 | 412 |
| 223 | Development planning | 1 | 50 | 524 | 381 |
| 223 | Economic planning | 1 | 50 | 1031 | 760 |
| 226 | Mineral resources | 1 | 48 | 1214 | 1017 |
| 226 | Social behavior | 3 | 48 | 1397 | 1862 |
| 228 | Adolescent Psychology | 3 | 47 | 1024 | 1333 |
| 228 | child behavior | 2 | 47 | 582 | 686 |
| 228 | Exercise | 3 | 47 | 1622 | 1738 |
| 231 | urban health | 1 | 46 | 658 | 583 |
| 231 | innovation | 3 | 46 | 696 | 1113 |
| 233 | Cost control | 1 | 45 | 386 | 240 |
| 233 | homosexuality | 4 | 45 | 376 | 636 |
| 235 | healthcare disparities | 3 | 44 | 604 | 858 |
| 236 | International Finance | 3 | 43 | 1818 | 2131 |
| 236 | drug development | 7 | 43 | 808 | 2567 |
| 236 | Culture | 3 | 43 | 1245 | 1121 |
| 236 | Marriage counseling | 1 | 43 | 675 | 583 |
| 236 | drugs | 7 | 43 | 1873 | 3660 |
| 241 | Green Chemistry | 1 | 42 | 2823 | 2966 |
| 241 | Project Management | 1 | 42 | 551 | 718 |
| 241 | Sustainable Engineering | 1 | 42 | 2907 | 2714 |
| 241 | Nutrition physiology | 7 | 42 | 511 | 1468 |
| 245 | Holistic Health | 1 | 41 | 1095 | 679 |
| 245 | Developmental Disabilities | 4 | 41 | 1045 | 1909 |
| 245 | allied health | 1 | 41 | 580 | 443 |
| 245 | race relations | 3 | 41 | 647 | 734 |
| 249 | ethnic groups | 1 | 40 | 702 | 560 |
| 249 | feeding behavior | 1 | 40 | 1552 | 1492 |
| 249 | Africa | 3 | 40 | 2022 | 1927 |
| 249 | Suicide | 5 | 40 | 468 | 988 |
| 249 | Appetite | 1 | 40 | 1390 | 1350 |
| 254 | Cytology | 3 | 39 | 5222 | 6923 |
| 254 | Research Design | 3 | 39 | 1634 | 2301 |
| 254 | Cognitive neuroscience | 2 | 39 | 1355 | 1711 |
| 254 | complementary therapies | 3 | 39 | 2539 | 3312 |
| 258 | individual differences | 1 | 38 | 528 | 567 |
| 258 | drug addiction | 3 | 38 | 1454 | 2188 |
| 260 | Mathematical Physics | 2 | 37 | 4016 | 3277 |
| 260 | primary prevention | 3 | 37 | 536 | 904 |
| 262 | Teaching | 9 | 36 | 1088 | 2343 |
| 262 | Physical fitness | 2 | 36 | 1550 | 1791 |
| 262 | research and development | 2 | 36 | 493 | 644 |
| 262 | internet | 5 | 36 | 1040 | 1788 |
| 262 | Entomology | 2 | 36 | 3387 | 3128 |
| 267 | Organic Chemistry | 1 | 35 | 5024 | 4548 |
| 267 | health behavior | 3 | 35 | 1236 | 1950 |
| 267 | ovary | 1 | 35 | 523 | 479 |
| 270 | Analytical Chemistry | 2 | 34 | 6019 | 6668 |
| 270 | Adult Education | 5 | 34 | 457 | 714 |
| 270 | Tropical Medicine | 2 | 34 | 2956 | 3193 |
| 273 | Geophysics | 1 | 33 | 5841 | 5291 |
| 273 | Atmospheric Chemistry | 1 | 33 | 1630 | 1851 |
| 273 | Atmospheric Physics | 1 | 33 | 2782 | 2689 |
| 276 | Community Psychology | 2 | 32 | 819 | 1092 |
| 276 | Community Psychiatry | 4 | 32 | 1118 | 2173 |
| 276 | Telemedicine | 2 | 32 | 650 | 1015 |
| 276 | international cooperation | 4 | 32 | 556 | 1231 |
| 280 | Sexuality | 6 | 31 | 185 | 513 |
| 280 | Hospitals | 2 | 31 | 1169 | 1444 |
| 280 | Asia | 1 | 31 | 5695 | 4081 |
| 280 | Population | 1 | 31 | 2266 | 1850 |
| 280 | Autism | 2 | 31 | 1034 | 1556 |
| 280 | Population Dynamics | 1 | 31 | 460 | 383 |
| 286 | Morphology | 1 | 30 | 1649 | 1276 |
| 286 | Diabetes mellitus | 3 | 30 | 2779 | 4371 |
| 286 | economic policy | 4 | 30 | 2618 | 3110 |
| 289 | Socialization | 2 | 29 | 711 | 1111 |
| 289 | Knowledge management | 3 | 29 | 660 | 733 |
| 289 | Parasitology | 1 | 29 | 4234 | 3998 |
| 289 | War and Society | 1 | 29 | 428 | 473 |
| 289 | Parasitic Diseases | 1 | 29 | 3885 | 3956 |
| 289 | warfare | 1 | 29 | 634 | 685 |
| 289 | peace | 1 | 29 | 965 | 820 |
| 289 | Parasites | 1 | 29 | 3013 | 2882 |
| 289 | role | 2 | 29 | 577 | 968 |
| 289 | finance | 2 | 29 | 3082 | 3047 |
| 299 | Radiology | 1 | 28 | 3290 | 2638 |
| 299 | Radiography | 1 | 28 | 1394 | 1330 |
| 299 | Cell Biology | 2 | 28 | 5759 | 7262 |
| 299 | human development | 3 | 28 | 872 | 1533 |
| 299 | adulthood | 3 | 28 | 101 | 226 |
| 304 | Nanotechnology | 1 | 27 | 7746 | 7687 |
| 304 | Medical Ethics | 2 | 27 | 1805 | 1945 |
| 304 | drug resistance | 1 | 27 | 1731 | 1802 |
| 304 | food service | 4 | 27 | 71 | 134 |
| 308 | Bioengineering | 1 | 26 | 7586 | 7806 |
| 308 | Biocompatible Materials | 1 | 26 | 6040 | 6592 |
| 308 | chronic disease | 1 | 26 | 832 | 855 |
| 311 | Polymers | 3 | 25 | 5192 | 6612 |
| 311 | Alternative Medicine | 2 | 25 | 2845 | 3768 |
| 311 | Bacteriology | 2 | 25 | 2837 | 4145 |
| 311 | disabilities | 2 | 25 | 1186 | 1579 |
| 311 | Mental illness | 3 | 25 | 2692 | 4281 |
| 316 | Dyslexia | 1 | 24 | 327 | 366 |
| 316 | Risk assessment | 2 | 24 | 955 | 1276 |
| 316 | Health risk communication | 2 | 24 | 108 | 201 |
| 316 | Materials | 1 | 24 | 8893 | 8426 |
| 316 | risk factors | 2 | 24 | 1152 | 1578 |
| 316 | Communication in marketing | 1 | 24 | 376 | 418 |
| 316 | social science | 1 | 24 | 345 | 449 |
| 316 | Health Risk Assessment | 2 | 24 | 730 | 1042 |
| 316 | city planning | 2 | 24 | 2301 | 2738 |
| 316 | Jurisprudence | 2 | 24 | 1439 | 1698 |
| 316 | polymerization | 2 | 24 | 4999 | 5628 |
| 327 | Industrial Sociology | 1 | 23 | 381 | 386 |
| 327 | Investment analysis | 2 | 23 | 1154 | 1436 |
| 329 | Embryology | 4 | 22 | 1750 | 3314 |
| 329 | Magnetic Resonance Imaging | 1 | 22 | 1239 | 1258 |
| 329 | Developmental Biology | 4 | 22 | 2287 | 4309 |
| 329 | Diagnostic Imaging | 1 | 22 | 4190 | 3917 |
| 333 | Biomechanics | 1 | 21 | 3021 | 2999 |
| 333 | Mass Media | 1 | 21 | 1812 | 1023 |
| 333 | Feeding and Eating Disorders | 1 | 21 | 1623 | 1805 |
| 333 | Statistical physics | 3 | 21 | 4085 | 5205 |
| 333 | Developing countries | 5 | 21 | 2290 | 4638 |
| 338 | Immunology | 3 | 20 | 4710 | 6904 |
| 338 | Public Relations | 2 | 20 | 680 | 868 |
| 338 | Bioethics | 1 | 20 | 1908 | 1715 |
| 338 | Crisis Intervention | 1 | 20 | 407 | 503 |
| 338 | Smoking | 2 | 20 | 1172 | 1895 |
| 338 | nursing ethics | 1 | 20 | 563 | 689 |
| 338 | polar regions | 1 | 20 | 1371 | 1421 |
| 338 | child sexual abuse | 1 | 20 | 349 | 435 |
| 338 | Dementia | 4 | 20 | 1613 | 2144 |
| 347 | Vocational Education | 2 | 19 | 742 | 991 |
| 347 | Food service management | 8 | 19 | 174 | 1080 |
| 347 | ethanol | 1 | 19 | 1128 | 1280 |
| 350 | Biophysics | 3 | 18 | 7044 | 9716 |
| 350 | Econometrics | 1 | 18 | 2373 | 2123 |
| 350 | sadness | 2 | 18 | 328 | 583 |
| 350 | software | 1 | 18 | 2018 | 2381 |
| 350 | death | 2 | 18 | 460 | 683 |
| 350 | health planning | 3 | 18 | 2739 | 4397 |
| 350 | antisocial personality disorder | 2 | 18 | 328 | 583 |
| 350 | sexual behavior | 4 | 18 | 661 | 1589 |
| 358 | Statistics | 1 | 17 | 4731 | 4190 |
| 358 | Mathematics | 4 | 17 | 6263 | 7950 |
| 358 | Algebra | 2 | 17 | 1964 | 1738 |
| 358 | environmental protection | 2 | 17 | 5153 | 7132 |
| 358 | Behavioral research | 1 | 17 | 1193 | 1165 |
| 358 | Transnational corporations | 1 | 17 | 756 | 921 |
| 358 | Biometrics | 1 | 17 | 2136 | 2162 |
| 365 | Orthopedics | 1 | 16 | 3048 | 3323 |
| 365 | Public Health Administration | 2 | 16 | 615 | 752 |
| 365 | technical education | 1 | 16 | 1029 | 1005 |
| 368 | Linguistics | 1 | 15 | 2851 | 2205 |
| 368 | Geriatric Medicine | 1 | 15 | 361 | 492 |
| 368 | Psycholinguistics | 1 | 15 | 1743 | 1989 |
| 368 | Environmental Psychology | 1 | 15 | 758 | 1111 |
| 368 | Phonetics | 1 | 15 | 646 | 731 |
| 368 | Plant Ecology | 1 | 15 | 3025 | 3706 |
| 368 | preventive medicine | 2 | 15 | 2152 | 3474 |
| 368 | Nuclear family | 1 | 15 | 348 | 347 |
| 368 | plant communities | 1 | 15 | 1921 | 2512 |
| 368 | Cognition | 1 | 15 | 3064 | 3541 |
| 378 | Religion and Psychology | 1 | 14 | 1191 | 1247 |
| 378 | Investments | 2 | 14 | 900 | 1352 |
| 380 | Pharmacy | 1 | 13 | 4149 | 4780 |
| 380 | Global Health | 2 | 13 | 1812 | 2829 |
| 380 | Database Management | 2 | 13 | 1121 | 1681 |
| 380 | Gender Studies | 1 | 13 | 1013 | 1187 |
| 380 | Emergency Medical Services | 2 | 13 | 1343 | 2169 |
| 380 | Clinical Trials | 1 | 13 | 1438 | 1697 |
| 380 | Queer Studies | 1 | 13 | 626 | 853 |
| 380 | Freshwater Ecology | 1 | 13 | 616 | 682 |
| 380 | Depression | 1 | 13 | 844 | 1302 |
| 380 | Emergency Medicine | 2 | 13 | 2482 | 3443 |
| 380 | Anxiety Disorders | 1 | 13 | 1107 | 1642 |
| 380 | Anxiety | 1 | 13 | 1110 | 1641 |
| 380 | Neuromuscular diseases | 1 | 13 | 1438 | 1823 |
| 380 | Pharmacy management | 1 | 13 | 766 | 775 |
| 380 | Therapeutics | 1 | 13 | 3671 | 4584 |
| 380 | drug therapy | 2 | 13 | 3694 | 5446 |
| 396 | Philosophy | 4 | 12 | 1721 | 1800 |
| 396 | Cognitive Behavioral Therapy | 1 | 12 | 500 | 693 |
| 396 | Reproductive health | 2 | 12 | 1260 | 2223 |
| 396 | Portfolio Management | 2 | 12 | 481 | 655 |
| 396 | Birth control | 1 | 12 | 1049 | 1504 |
| 401 | Criminology | 1 | 11 | 1691 | 1782 |
| 401 | Medical Microbiology | 1 | 11 | 4498 | 5834 |
| 401 | Agronomy | 1 | 11 | 1161 | 1593 |
| 401 | Divorce | 1 | 11 | 323 | 379 |
| 401 | Feminism | 1 | 11 | 1152 | 1165 |
| 401 | dietary supplements | 1 | 11 | 1659 | 2391 |
| 401 | Cell differentiation | 2 | 11 | 2581 | 4244 |
| 401 | Gender identity | 1 | 11 | 660 | 638 |
| 401 | Mycology | 1 | 11 | 3021 | 3631 |
| 401 | Condensed Matter | 4 | 11 | 3456 | 5274 |
| 411 | Engineering | 4 | 10 | 5028 | 8628 |
| 411 | Solid State Physics | 3 | 10 | 4232 | 6121 |
| 411 | Organizational change | 1 | 10 | 1479 | 1806 |
| 411 | Social policy | 5 | 10 | 885 | 2265 |
| 411 | visualization | 3 | 10 | 2211 | 2627 |
| 411 | Radicalism | 1 | 10 | 124 | 109 |
| 411 | Europe | 1 | 10 | 6525 | 6782 |
| 418 | Cognitive Psychology | 1 | 9 | 841 | 935 |
| 418 | Ethics | 2 | 9 | 1492 | 2537 |
| 418 | Phenomenology | 1 | 9 | 544 | 405 |
| 418 | Philosophy of Mind | 1 | 9 | 511 | 577 |
| 418 | Total Quality Management | 2 | 9 | 799 | 1652 |
| 418 | Psychoanalysis | 5 | 9 | 337 | 710 |
| 418 | Professional ethics | 2 | 9 | 429 | 1051 |
| 418 | hazard mitigation | 2 | 9 | 1352 | 2608 |
| 418 | International Business | 1 | 9 | 470 | 649 |
| 418 | natural disasters | 2 | 9 | 1871 | 3325 |
| 428 | Higher Education | 3 | 8 | 625 | 1420 |
| 428 | Theology | 17 | 8 | 288 | 755 |
| 428 | Socioeconomic Factors | 3 | 8 | 940 | 2636 |
| 428 | Plant physiology | 2 | 8 | 2821 | 4514 |
| 428 | Vocational guidance | 3 | 8 | 966 | 2153 |
| 428 | Psychiatric hospitals | 2 | 8 | 534 | 846 |
| 434 | Neurochemistry | 1 | 7 | 4141 | 5388 |
| 434 | Economic Development | 1 | 7 | 3312 | 4122 |
| 434 | Educational Sociology | 1 | 7 | 745 | 961 |
| 434 | Sports Medicine | 5 | 7 | 2603 | 5048 |
| 434 | Operations Research | 1 | 7 | 3744 | 4328 |
| 434 | Adoption | 1 | 7 | 253 | 366 |
| 434 | Nonlinear Dynamics | 1 | 7 | 3431 | 4168 |
| 434 | Social Issues | 1 | 7 | 510 | 830 |
| 434 | digital preservation | 9 | 7 | 11 | 364 |
| 434 | pain management | 1 | 7 | 1506 | 1963 |
| 434 | civilization | 6 | 7 | 1089 | 1419 |
| 434 | Development | 1 | 7 | 1623 | 2350 |
| 434 | United Kingdom | 1 | 7 | 3402 | 4263 |
| 434 | Economic Assistance | 1 | 7 | 1479 | 2144 |
| 434 | world | 1 | 7 | 1500 | 2380 |
| 449 | Materials Science | 10 | 6 | 3430 | 8600 |
| 449 | Speech-Language Pathology | 2 | 6 | 421 | 964 |
| 449 | Language Disorders | 2 | 6 | 1231 | 2169 |
| 449 | Teratology | 2 | 6 | 467 | 1076 |
| 449 | Community Health Nursing | 1 | 6 | 179 | 321 |
| 449 | Microbial Ecology | 2 | 6 | 3325 | 5898 |
| 449 | Biomass Energy | 1 | 6 | 4271 | 5541 |
| 449 | Image Processing | 8 | 6 | 1430 | 4631 |
| 449 | speech therapy | 2 | 6 | 593 | 1149 |
| 449 | Behaviorism | 1 | 6 | 187 | 294 |
| 449 | physical therapy techniques | 2 | 6 | 237 | 457 |
| 449 | civil rights | 3 | 6 | 435 | 1055 |
| 449 | Visual Literacy | 2 | 6 | 38 | 96 |
| 449 | Evidence-Based Medicine | 2 | 6 | 2009 | 3631 |
| 449 | Speech Disorders | 2 | 6 | 1464 | 2546 |
| 449 | abnormalities | 2 | 6 | 302 | 744 |
| 449 | Biomass | 1 | 6 | 1355 | 2314 |
| 449 | Imaging systems | 8 | 6 | 373 | 2050 |
| 449 | Cognitive Learning | 1 | 6 | 283 | 440 |
| 449 | planning | 1 | 6 | 1581 | 2250 |
| 449 | autism spectrum disorder | 1 | 6 | 171 | 327 |
| 470 | Experimental Psychology | 1 | 5 | 1030 | 1316 |
| 470 | health services accessibility | 1 | 5 | 2114 | 3046 |
| 470 | Speech Perception | 1 | 5 | 515 | 884 |
| 470 | auditory perception | 1 | 5 | 662 | 1075 |
| 470 | intergroup relations | 1 | 5 | 378 | 628 |
| 470 | Transport | 2 | 5 | 944 | 1954 |
| 470 | Sea | 2 | 5 | 852 | 1735 |
| 470 | built environment | 1 | 5 | 42 | 77 |
| 470 | Fishery resources | 2 | 5 | 956 | 1894 |
| 470 | Oral communication | 1 | 5 | 881 | 1335 |
| 470 | China | 2 | 5 | 4319 | 7143 |
| 470 | Middle East | 1 | 5 | 2052 | 2375 |
| 470 | Alzheimer's disease | 3 | 5 | 1860 | 2809 |
| 470 | Steroids | 1 | 5 | 1994 | 2887 |
| 470 | World Wide Web | 1 | 5 | 973 | 1294 |
| 470 | Speech | 1 | 5 | 1720 | 2410 |
| 470 | econometric models | 1 | 5 | 1171 | 1682 |
| 470 | Agriculture | 1 | 5 | 4497 | 5651 |
| 470 | Fisheries | 2 | 5 | 2418 | 3921 |
| 489 | Artificial Intelligence | 1 | 4 | 6405 | 7970 |
| 489 | Children's Literature | 1 | 4 | 216 | 232 |
| 489 | Political Sociology | 2 | 4 | 605 | 1167 |
| 489 | emergency management | 1 | 4 | 1921 | 3033 |
| 489 | Ethnic relations | 1 | 4 | 1220 | 1453 |
| 489 | Nationalism | 1 | 4 | 690 | 920 |
| 489 | Biodiversity conservation | 1 | 4 | 2983 | 4214 |
| 489 | Social integration | 2 | 4 | 36 | 48 |
| 489 | data collection | 1 | 4 | 2520 | 3828 |
| 489 | Group Identity | 1 | 4 | 195 | 340 |
| 489 | church and state | 1 | 4 | 268 | 102 |
| 500 | Genetic Counseling | 1 | 3 | 723 | 1158 |
| 500 | Photochemistry | 2 | 3 | 2633 | 4779 |
| 500 | Metabolic diseases | 1 | 3 | 4519 | 6127 |
| 500 | Technological Innovations | 1 | 3 | 2124 | 3260 |
| 500 | Ferroelectricity | 1 | 3 | 1654 | 2033 |
| 500 | Photobiology | 2 | 3 | 2082 | 3897 |
| 500 | journals | 3 | 3 | 173 | 207 |
| 500 | Stem cells | 1 | 3 | 3027 | 4233 |
| 500 | North America | 1 | 3 | 1985 | 2905 |
| 500 | Diabetes | 1 | 3 | 4209 | 5959 |
| 510 | Electrical Engineering | 8 | 2 | 2713 | 6773 |
| 510 | Systems Analysis | 1 | 2 | 2233 | 3508 |
| 510 | Environmental Economics | 2 | 2 | 634 | 1650 |
| 510 | Crystallization | 1 | 2 | 1095 | 1578 |
| 510 | Romanticism | 1 | 2 | 354 | 289 |
| 510 | History of Nursing | 2 | 2 | 52 | 104 |
| 510 | disarmament | 1 | 2 | 400 | 609 |
| 510 | Crystallography | 1 | 2 | 2965 | 3552 |
| 510 | Business Intelligence | 1 | 2 | 152 | 317 |
| 510 | System analysis | 1 | 2 | 4572 | 6442 |
| 510 | Osteoporosis | 1 | 2 | 882 | 1611 |
| 510 | Bone diseases | 1 | 2 | 1110 | 1847 |
| 510 | minority groups | 1 | 2 | 183 | 355 |
| 510 | strategy | 1 | 2 | 484 | 651 |
| 510 | educational innovations | 3 | 2 | 587 | 1682 |
| 525 | Law | 1 | 1 | 2912 | 3351 |
| 525 | Anthropology | 1 | 1 | 3275 | 4319 |
| 525 | Environmental Engineering | 1 | 1 | 6929 | 9583 |
| 525 | Astronomy | 1 | 1 | 4214 | 5534 |
| 525 | Computer Graphics | 1 | 1 | 2997 | 4443 |
| 525 | Ergonomics | 1 | 1 | 2128 | 3059 |
| 525 | Occupational Health | 4 | 1 | 1249 | 3902 |
| 525 | American Literature | 8 | 1 | 343 | 764 |
| 525 | Criminal psychology | 2 | 1 | 1055 | 2156 |
| 525 | Educational Technology | 1 | 1 | 3053 | 4742 |
| 525 | Industrial Safety | 4 | 1 | 1221 | 3980 |
| 525 | Psychometrics | 1 | 1 | 815 | 1340 |
| 525 | Statistical Mechanics | 1 | 1 | 2186 | 2976 |
| 525 | industrial hygiene | 4 | 1 | 1243 | 3910 |
| 525 | police psychology | 2 | 1 | 149 | 530 |
| 525 | Religion and Culture | 1 | 1 | 711 | 1161 |
| 525 | Qualitative Research | 1 | 1 | 1019 | 1803 |
| 525 | Randomized Controlled Trials | 1 | 1 | 2584 | 4115 |
| 525 | Protozoa | 1 | 1 | 915 | 1512 |
| 525 | Marine resources | 1 | 1 | 1424 | 2437 |
| 525 | France | 3 | 1 | 520 | 1141 |
| 525 | Crystal growth | 1 | 1 | 1816 | 2615 |
| 525 | Computer Literacy | 1 | 1 | 525 | 973 |
| 525 | crime | 2 | 1 | 927 | 1801 |
| 525 | Australia | 1 | 1 | 4123 | 6189 |
| 525 | Pollution | 1 | 1 | 8671 | 11678 |
| 551 | Arts | 1 | 0 | 1128 | 1563 |
| 551 | Literature | 8 | 0 | 597 | 1668 |
| 551 | History | 2 | 0 | 1615 | 2180 |
| 551 | Hematology | 1 | 0 | 5572 | 6876 |
| 551 | Political Psychology | 1 | 0 | 627 | 1143 |
| 551 | Chemotherapy | 1 | 0 | 3095 | 4663 |
| 551 | Autobiography | 1 | 0 | 207 | 333 |
| 551 | Engineering Ethics | 1 | 0 | 473 | 1073 |
| 551 | Music | 3 | 0 | 1116 | 2750 |
| 551 | Social History | 1 | 0 | 1051 | 1409 |
| 551 | Control Theory | 1 | 0 | 2861 | 4093 |
| 551 | Human Rights | 1 | 0 | 1253 | 2155 |
| 551 | Infections | 1 | 0 | 2454 | 3958 |
| 551 | Political Ecology | 1 | 0 | 190 | 421 |
| 551 | Popular culture | 1 | 0 | 1051 | 1493 |
| 551 | Language and Culture | 1 | 0 | 373 | 708 |
| 551 | Art | 1 | 0 | 911 | 1068 |
| 551 | philology | 1 | 0 | 1342 | 1397 |
| 551 | Calorimetry | 1 | 0 | 2207 | 3394 |
| 551 | Sound | 1 | 0 | 1563 | 2493 |
| 551 | infection | 1 | 0 | 3378 | 5246 |
| 551 | Brain | 1 | 0 | 4575 | 6350 |
| 551 | psychoanalytic therapy | 1 | 0 | 252 | 436 |
| 551 | Reading | 1 | 0 | 1028 | 1675 |
| 551 | manuscripts | 2 | 0 | 61 | 98 |
| 551 | migration policy | 1 | 0 | 478 | 995 |
| 551 | Thermal analysis | 1 | 0 | 2207 | 3394 |
| 551 | language | 3 | 0 | 897 | 2287 |
