- American Public Health Associationwww.apha.org
- International Council of Nurseswww.icn.ch
- Home Care Association of Americawww.hcaoa.org
- Mayo Clinicwww.mayoclinic.com
- Medicare www.medicare.gov
- U.S. Department of Health & Human Serviceswww.hhs.gov
- WebMD www.webmd.com
