- Centers for Medicare & Medicaid Serviceswww.cms.gov
- Medical Library Associationwww.mlanet.org
- Centers for Disease Control and Preventionwww.cdc.gov
- Agency for Healthcare Research and Qualitywww.ahrq.gov
- National Organization for Rare Disorderswww.rarediseases.org
- U.S. Department of Health & Human Serviceswww.hhs.gov
