Food and Drug Administration www.fda.gov US National Library of Medicine / Medline www.nlm.nih.gov National Institutes of Health Information Page www.health.nih.gov Agency for Healthcare Research and Quality www.ahcpr.gov National Institute on Aging www.nia.nih.gov Healthfinder www.healthfinder.gov Medscape www.medscape.com Eden Alternative www.edenalt.com
