American Accreditation Healthcare Commission/URAC
American Medical Association
BNA's Managed Care Reporter
Department of Health and Human Services
Health Hippo
Healthfinder
Medicare
Medscape (Medical News)
Modern Healthcare Magazine
National Association for Quality Assurance (NCQA)
National Association of Insurance Commissioners
National Institutes of Health
New England Journal of Medicine
New York State Department of Health
The On-Line Medical Dictionary