2Matthews E,Malcolm C.Nurses'knowledge and attitudes inpain management practice[J].Br J Nurs,2007,16(3):174-179.
3Bokken L, Linssen T, Scherpbier A, et al. Feedback by simulated patients in undergraduate medical education: a systematic review of the literature[J]. Med Educ, 2009, 43(3) :202-210.