6Balslev T,de Grave W S,Muijtjens A M,et al.Comparison of text and video cases in a postgraduate problem-based learning format[J].Med Educ,2005,39:1086-1092.
7Kamin C,O' Sullivan P,Deterding R,et al.A comparison of critical thinking in groups of third-year medical students in text,video,and virtual PBL case modalities[J].Acad Med,2003,78:204-211.
8[1]Jotkowit A B,Glick S,Porath A.physician charter on medical professionalism:a challenge for medical education[J].European Journal of Internal Medicine, 2004,15(1): 5～9.
9[3]Leftwich GM.Science and the humanities:the case for state humanities councils[J].Technology in Society,2002,24(4):523～530.
10Mclean M, Murrell K. WebCT: integration computer - mediated communication and resource delivery into a new problem - based curriculum [J]. J Audiov Media Med, 2002,25 ( 1 ): 268 - 271.
