- Centers for Disease Control and Prevention (CDC) – Laboratory Quality and Safetywww.cdc.gov
- National Institutes of Health (NIH) – National Library of Medicine (NLM)www.nlm.nih.gov
- National Institutes of Health www.health.nih.gov
- U.S. Department of Health & Human Services www.hhs.gov
- Medicarewww.medicare.gov
