- American Cancer Societywww.cancer.org
- American Health Care Associationwww.ahcancal.org
- American Medical Associationwww.ama-assn.org
- Centers for Medicare & Medicaid Services (CMS)www.cms.gov
- National Association for Home Care and Hospicewww.nahc.org
- American Stroke Associationwww.stroke.org
