- American Health Care Associationwww.ahcancal.org
- American Heart Associationwww.americanheart.org
- American Medical Associationwww.ama-assn.org
- Centers for Medicare & Medicaid Services (CMS)www.cms.gov
- Medicarewww.medicare.gov
- U.S. Department of Health & Human Serviceswww.hhs.gov
- Texas Health and Human Serviceswww.hhs.texas.gov
