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BioMed Central Ltd
13
British Medical Association
9
American Health Consultants
5
Massachusetts Medical Society
5
British Veterinary Association
4
California Medical Association
4
Hindawi Publishing Corporation
4
Multidisciplinary Digital Publishing Institute
4
American Industrial Hygiene Association
3
Canadian Medical Association
3
Dānishgāh-i ʻUlūm-i Pizishkī-i Tihrān
3
Health Reference Center
3
Institute of Medicine (U.S.)
3
NEJM Group
3
National Academy of Engineering
3
National Academy of Sciences (U.S.)
3
National Research Council (U.S.)
3
Public Library of Science
3
Royal Society of Medicine (Great Britain)
3
All-India Institute of Medical Sciences
2
American Academy of Family Physicians
2
American Academy of Pediatrics. Section on Adolescent Health
2
American College of Physicians
2
American Institute of Physics
2
American Medical Association
2
American Society of Law, Medicine & Ethics
2
Associazione italiana di medicina nucleare
2
British Association for Accident and Emergency Medicine
2
British Association of Sport and Medicine
2
Cohen, Shelley
2
Dānishgāh-i ʻUlūm-i Pizishkī-i Tabrīz
2
Deutsche Gesellschaft für Lasermedizin
2
Dove Medical Press Ltd
2
European Association of Nuclear Medicine
2
European Society of Intensive Care Medicine
2
Institute of Medical Ethics (Great Britain)
2
International Association of Circumpolar Health Publishers
2
International Association of Radiopharmacology
2
International Scholarly Research Network
2
John Wiley & Sons
2
Libertas Academica
2
National Institutes of Health (U.S.). PubMed Central
2
Nova Science Publishers
2
Pharmacognosy Network Worldwide
2
Provincial Medical and Surgical Association
2
SPARC (Organization)
2
Taylor & Francis
2
University of California, Irvine. Department of Emergency Medicine
2
World Health Organization
2
Xi'an jiao tong da xue
2
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