Greatest medical discoveries 21st century

The first decade of the 21st Century brought a number of discoveries, mistakes, and medical advances that have influenced medicine from the patient's bedside to the medicine cabinet. In some cases these advances changed deep-seated beliefs in medicine; in others, they opened up possibilities beyond what doctors thought was possible years ago. ABC News, in collaboration with MedPage Today reached out to more than 800 specialists as well as a distinguished panel of medical historians to put together a top 10 list of medical advances one decade into this century