- U.S. Department of Health & Human Serviceswww.hhs.gov
- American Health Care Associationwww.ahcancal.org
- MedicineNet – Health and Medical Information Produced by Doctorswww.medicinenet.com
- Everyday Health – Online Health Informationwww.everydayhealth.com
- National Institutes of Healthwww.health.nih.gov
