3Fiamingo P, Tedeschi U, Veroux M, et al. Laparoscopic treatment of simplehepatic cysts and polycystic liver disease[J]. Surg Endosc,2003,17 (4):625-626.
4Klingler PJ, Gadenstatter M, Schmid T, et al. Treatment of hepatic cystsin in the era of laparoscopic surgery[J]. Br J Surg,1997,8(4):438-444.
5Regev A, Reddy KR, Merho M, et al. Large cystic lesions of the liver in adults: a 15-years experience in a tertiarycenter[J]. J Am Coll Surg,2001,193 (1):36-45.
5Perry, Walter. The open university .. history andevaluation of a dynamic innovation in higher education[M]. San Francisco : Jossey-Bass Pub. , 1977. 30.
6Wagner, L. The economics of educational media[M]. London: Macmillan, 1982. 165.