Medicina Interna

American College of Physicians Online: Internal Medicine http://www.acponline.org/
American Society of Hypertension http://www.ash-us.org/
Archives of Internal Medicine http://archinte.ama-assn.org/
El Portal de la Virología en Español - Universitat d'Alacant http://virologia.ua.es/
Harrison's Online http://harrisons.accessmedicine.com/harrisons/public/index.html
InternalMD Linx http://www.internalmdlinx.com/
Society of General Internal Medicine http://www.sgim.org/