5Dochy F ,Segers M, Vanden Bossche P, et al.Effects of problem based learning: a meta analysis[J].Eearning and Instruction ,2003,13:533.
6Wun YT,Tse EY,Lain TP,et al.PBL curriculum improves medical students participation in small-group tutorials [J].Med Teach,2007, 29(6) : 1.
7Yu HY, Wu ZA, Su MS, et al.Problem-based, small-group tutorial learning in clincal neurology for second-year medical students [J]. Zhoughua Yi Xue Za Zhi(Taipei), 2000,63(8):598.
