General Internal Medicine
E-Medicine & Medscape – http://emedicine.medscape.com/
MD Consult – http://www.mdconsult.com
American College of Physician – http://www.acponline.org
American Medical Association – http://www.ama-assn.org/
Society of Hospital Medicine – http://www.hospitalmedicine.org
National Guideline Clearing House – http://www.guideline.gov/