- Mayo Clinicwww.mayoclinic.com
- Medicarewww.medicare.gov
- American Heart Associationwww.americanheart.org
- Home Care Association of Americawww.hcaoa.org
- Everyday Health – Online Health Informationwww.everydayhealth.com
- MedicineNet – Health and Medical Information Produced by Doctorswww.medicinenet.com
