- Better Business Bureauwww.bbb.org
- American Health Care Associationwww.ahcancal.org
- American Medical Associationwww.ama-assn.org
- American Public Health Associationwww.apha.org
- American Red Crosswww.redcross.org
- Centers for Medicare & Medicaid Services (CMS)www.cms.gov
- National Institutes of Healthwww.health.nih.gov
- Medicarewww.medicare.gov
