4Liao Z, Li ZS, Leung JW, et al. Success rate and complica- tions of ERCP performed during hands-on training courses: a multicenter study in China [J]. Gastrointest Endosc, 2009, 69(2): 230-237.
5Liao Z, Li ZS, Leung JW, et al. How safe and successful are live demonstrations of therapeutic ERCP? A large multi- center study [J]. Am J Gastroenterol, 2009, 104(1): 47-52.
6Accreditation Council for Graduate Medical Education. Memorandum regarding changes in minimum requirements for laparoscopy and endoscopy[EB/OL], http://www.ae- gme.org/.
7Lee SH, Chung IK, Kim S J, et al. An adequate level of training for technical competence in screening and diagnos- tic colonoscopy: a prospective multicenter evaluation of the learning curve [J]. Gastrointest Endose, 2008, 67(4):683- 689.
8Vassiliou MC, Kaneva PA, Poulose BK, et al. Global Assessment of Gastrointestinal Endoscopic Skills (GAG- ES): a valid measurement tool for technical skills in flexi- ble endoscopy [J]. Surg Endose, 2010,24(8): 834-1841.