2Donner RS, Bickley H. Problem-based learning in Amer- ican medical education :an overview [J]. Bull Med Libr As- soc, 1993,81 (3) : 294-298.
3Norman GR,Wenghofer GE, Klass D. Predicting doctor per- formance outcomes of curriculum interventions :problem based learning and continuing competence [J]. Med Educ, 2008,42 (8) :794-799.
4Gwee MC. problem-based learning:a strategic learning system design for the education of healthcare profession- als in the 21st century [J]. Kaohsiung J Med Sci,2009, 25(5) :231-239.