- American Health Care Associationwww.ahcancal.org
- American Public Health Associationwww.apha.org
- American Physical Therapy Associationwww.apta.org
- Mayo Clinicwww.mayoclinic.com
- National Institutes of Healthwww.health.nih.gov
- U.S. Department of Health & Human Serviceswww.hhs.gov
