Author
ScienceDirect (Online service)
47
BioMed Central Ltd
45
Sage Journals Online
40
Wiley InterScience (Online service)
20
Hindawi Publishing Corporation
12
Libertas Academica
12
Molecular Diversity Preservation International
10
EBSCO Publishing (Firm)
8
International Scholarly Research Network
6
Sage Publications
5
American Medical Association
4
American Psychological Association
4
British Medical Association
4
International Union of Crystallography
4
Portico (Organization)
4
Public Library of Science
4
Taylor & Francis Online
4
Alan Guttmacher Institute
3
American Chemical Society
3
American Psychiatric Association
3
American Society for Microbiology
3
American Veterinary Medical Association
3
Dānishgāh-i ʻUlūm-i Pizishkī-i Tihrān
3
LINK (Online service)
3
National Research Council of Canada
3
SPARC (Organization)
3
Thomson Gale (Firm)
3
American Anthropological Association
2
American Association of Neurological Surgeons
2
American College of Nurse-Midwives
2
American College of Surgeons
2
American Diabetes Association
2
American Educational Research Association
2
American Personnel and Guidance Association. Division of Rehabilitation Counseling
2
American Physiological Society (1887- )
2
American Public Health Association
2
American Rehabilitation Counseling Association
2
American Society of Andrology
2
American Society of Human Genetics
2
American Society of Plant Biologists
2
American Society of Plant Physiologists
2
American Therapeutic Society
2
Asian Pacific Association for the Study of the Liver
2
Association of Child and Adolescent Psychiatric Nurses
2
Association of Military Surgeons of the United States
2
Association of Pediatric Oncology Nurses (U.S.)
2
Association of Thoracic and Cardiovascular Surgeons of Asia
2
Biological Engineering Society
2
Canadian Physiological Society
2
Dove Medical Press Ltd
2
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