6Editoral.Evidence-Based medicine in its place[J].Lancet:1995,346:785.
7Dolmans DHJM,De Grave W,Wolfhagen IHAP,et al.Problem-based learning: future challenges for educational practice and researchMedical Education,2005.
8S Avital,H Hermon,R Greenberg,E Karin,Y Skornick.Learning curve in laparoscopic colorectal surgery: our first 100 patients. The Israel Medical Association Journal . 2006