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Author/Creator
- National Library of Medicine (U.S.)37
- American Medical Association32
- British Medical Association18
- Hindawi Publishing Corporation11
- Massachusetts Medical Society11
- National Institutes of Health (U.S.)11
- New York Academy of Medicine10
- Association of American Medical Colleges9
- Organization, World Health9
- Royal Society of Medicine (Great Britain)9
- American College of Physicians8
- New York Academy of Medicine. Library8
- American College of Sports Medicine7
- BioMed Central Ltd7
- California Medical Association7
- American Orthopaedic Society for Sports Medicine6
- Biochemical Society (Great Britain)6
- British Veterinary Association6
- Canadian Medical Association6
- College of Physicians of Philadelphia6