8[4]Albanese MA,Mitchell S.Problem-based learning:a review of literature on its outcomes and implementation issues[J].Academic Medicine,1993,68 (1):523.
9[5]Kaufman DM,Mann KV.Basic sciences in problem-based learning and conventional curricula:student attitudes[J].Medical Eduction,1997,31 (3):177.
10[7]Williams B.Case based learning--a review of the literature:is there scope for this educational paradigm in prehospital education?[J].Emergency medicine journal,2005,22 (8):577-581.