610 - Medicine & health 2,294 140 - Specific philosophical schools 204 363 - Other social problems & services 166 700 - The arts; fine & decorative arts 161 330 - Economics 108 370 - Education 99 more ... 100 - Philosophy & psychology 60 380 - Commerce, communications & transportation 53 612 - Human physiology 52 580 - Plants (Botany) 47 576 - Genetics & evolution 45 600 - Technology 43 170 - Ethics 41 333 - Economics of land & energy 37 800 - Literature & rhetoric 36 000 - Computer science, information & general works 30 616 - Diseases 28 340 - Law 26 361 - Social problems & social welfare in general 22 900 - History & geography 22 362 - Social welfare problems & services 17 551 - Geology, hydrology & meteorology 16 615 - Pharmacology & therapeutics 12 620 - Engineering & allied operations 11 540 - Chemistry & allied sciences 10 400 - Language 8 630 - Agriculture & related technologies 7 581 - Specific topics in natural history 5 320 - Political science 4 618 - Gynecology, obstetrics, pediatrics & geriatrics 4 658 - General management 4 174 - Occupational ethics 3 304 - Factors affecting social behavior 3 572 - Biochemistry 3 614 - Incidence & prevention of disease 3 338 - Production 2 372 - Elementary education 2 500 - Natural sciences & mathematics 2 613 - Personal health & safety 2 629 - Other branches of engineering 2 200 - Religion 1 300 - Social sciences 1 344 - Labor, social, education & cultural law 1 355 - Military science 1 410 - Linguistics 1 539 - Modern physics 1 570 - Life sciences; biology 1 617 - Surgery & related medical specialties 1 628 - Sanitary & municipal engineering 1 631 - Techniques, equipment & materials 1 641 - Food & drink 1 660 - Chemical engineering 1 see all ... less ...

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United States Agency for Healthcare Research and Quality 1,174 Effective Health Care Program (U.S.) 315 United States Agency for Health Care Policy and Research 164 United States Agency for Toxic Substances and Disease Registry 157 U.S. Preventive Services Task Force 156 Canadian Agency for Drugs and Technologies in Health 150 more ... National Toxicology Program (U.S.) 131 Oregon Health & Science University Pacific Northwest Evidence-based Practice Center 107 Johns Hopkins University Evidence-based Practice Center 99 Oregon Evidence-based Practice Center (Center for Health Research (Kaiser-Permanente Medical Care Program. Northwest Region)) 98 IARC Working Group on the Evaluation of Carcinogenic Risks to Humans 91 Minnesota Evidence-based Practice Center 91 International Agency for Research on Cancer 88 Oregon Health & Science University Evidence-based Practice Center 83 World Health Organization 83 RTI International-University of North Carolina Evidence-based Practice Center 79 Southern California Evidence-Based Practice Center/RAND 77 Chou, Roger 75 Center for Substance Abuse Treatment (U.S.) 74 Tufts Evidence-based Practice Center 70 Center for Nutrition Policy and Promotion (U.S.) Nutrition Evidence Systematic Review 68 Duke University Evidence-based Practice Center 68 United States Public Health Service 65 United States Department of Agriculture 56 Vanderbilt Evidence-based Practice Center 53 Research Triangle Institute-University of North Carolina Evidence-based Practice Center 50 Blue Cross and Blue Shield Association Technology Evaluation Center 46 American Academy of Microbiology 42 United States Environmental Protection Agency 34 National Institutes of Health (U.S.) 33 Special Programme of Research, Development, and Research Training in Human Reproduction (World Health Organization) 33 American Society for Microbiology 32 Brown University Center for Evidence-Based Medicine 31 Tufts-New England Medical Center Evidence-based Practice Center 31 Balk, Ethan 30 Nelson, Heidi D. 30 National Institute of Environmental Health Sciences 28 United States Substance Abuse and Mental Health Services Administration 28 ECRI Institute-Penn Medicine Evidence-based Practice Center 27 Scientific Resource Center (Portland, Or.) 26 CADTH Canadian Drug Expert Committee 25 ECRI Evidence-based Practice Center 25 Güngör, Darcy 25 Trikalinos, Thomas A. 25 Riley-Buckley, Merry Shannon 24 University of Alberta Evidence-based Practice Center 24 University of Ottawa Evidence-based Practice Center 24 Viswanathan, Meera 24 Lin, Jennifer 23 National Academies Press (U.S.) 22 Shekelle, Paul G. 22 United States Department of Health and Human Services 21 Dana, Tracy 20 Reid, Ann 20 Brasure, Michelle 19 Canadian Agency for Drugs and Technologies in Health Rapid Response Service 19 Jonas, Dan 19 McMaster University Evidence-based Practice Center 19 Institute of Medicine (U.S.) 18 O'Connor, Elizabeth A. 18 Rao, Ghanta N. 18 Technology Assessment Program (Agency for Healthcare Research and Quality) 18 Center for Health Research (Kaiser-Permanente Medical Care Program. Northwest Region) 17 Kane, Robert L. 17 Bougatsos, Christina 16 Butler, Mary 16 Dahabreh, Issa J. 16 Guirguis-Blake, Janelle 16 Newberry, Sydne J. 16 Patient-Centered Outcomes Research Institute (U.S.) 16 Patnode, Carrie D. 16 Whitlock, Evelyn P. 16 Aronson, Naomi 15 Gaynes, Bradley N. 15 Gliklich, Richard E. 15 Leavy, Michelle B. 15 National Academies of Sciences, Engineering, and Medicine (U.S.) 15 University of Connecticut-Hartford Hospital Evidence-based Practice Center 15 Hartling, Lisa 14 Henderson, Jillian T. 14 Ip, Stanley 14 Mayo Clinic Evidence-based Practice Center 14 Eunice Kennedy Shriver National Institute of Child Health and Human Development (U.S.) 13 Institute of Medicine (U.S.) Forum on Microbial Threats 13 McDonagh, Marian S. 13 Myers, Evan R. 13 Nasjonalt kunnskapssenter for helsetjenesten 13 Olson, Steve 13 Shamliyan, Tatyana 13 Stanford-UCSF Evidence-based Practice Center 13 Wilt, Timothy J. 13 Altevogt, Bruce M. 12 Berkman, Nancy D. 12 Centers for Disease Control and Prevention (U.S.) 12 Institute of Medicine (U.S.) Board on Health Sciences Policy 12 L&M Policy Research 12 New England Medical Center Hospital Evidence-based Practice Center 12 Wizemann, Theresa M. 12 World Health Organization Regional Office for Europe 12 Dreyer, Nancy A. 11 see all ... less ...

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