6Barrows HS. A taxonomy of problem-based learning methods[J]. Med Educ, 1986,20(6) :481-486.
7Buffer R,Inman D,Lobb D. Problem-based learning and the medical school:another ease of the emperor's new clothes? [J] Adv Physiol Educ,2005,29(4):194-196.
8Kwan CY. Is problem-based learning a quality approach to education in health sciences [J]. Ann Acad Med Singapore, 2001,30(4) :341-346.
9Gwee MC. Globalization of problem-based learning (PBL): cross-cuhural implications [J]. Kaohsiung J Med Sci, 2008,24 (3 Suppl ) : S 14-22.
10Li BJ,Tang Q,Cheng D,et al. Using siRNA in prophylac- tic and therapeutic regimens against SARS coronavirus in Rhesus macaque[J]. Nat Med, 2005,11 (9) : 944-951.
