- American Federation for Aging Researchwww.infoaging.org
- American Health Care Associationwww.ahcancal.org
- American Heart Associationwww.americanheart.org
- American Medical Associationwww.ama-assn.org
- American Red Crosswww.redcross.org
- American Physical Therapy Associationwww.apta.org
- American Public Health Associationwww.apha.org
- The Federation of State Boards of Physical Therapywww.fsbpt.org
- Arthritis Foundationwww.arthritis.org
- Centers for Medicare & Medicaid Services (CMS)www.cms.gov