8Diana HJM Dolmans,Willem De Grave, Ineke HAP Wolfhagen. Problem-based learning:future challenges for educational practice and research[J]. Medical Education, 2005, (39): 732-741.
9Katinka JAH Prince,Patrick WIJ van Eija, Henny PA Boshuizen, et al. General eompetencies of Problem-based learning(PBL)and non-PBL graduates[J]. Medical Education, 2005, (39) : 394-401.
