WebMD Health –www.WebMd.com – timely and credible quality health information

Aetna InteliHealth / content partner is Harvard Medical School –www.InteliHealth.com – credible health information from a trusted source - Harvard Medical School

Medline –www.MedlinePlus.com – trusted health information; a service of the US National Library of Medicine and the National Institutes of Health

Centers for Disease Control and Prevention –www.CDC.gov– an online source for credible health information, whose mission is "to promote health and quality of life by preventing and controlling disease, injury and disability"

National Institutes of Health –www.NIH.gov– part of the US Department of Health and Human Services, it's the nation's medical research agency

MSN Health –www.health.msn.com– part of the US Department of Health and Human Services, it’s the nation’s medical research agency