6Schirmer B,Winters KL, Edlich RF. Cholelithiasis and cho- lecystitis [ J J. J Long Term Elf Med Implants ,2005,15 (3) : 329 - 338.
7Karsten TM, Coene PP, Van Gulik TM, et al. Morphologic changes of extrahepatic bile ducts during obstruction and subsequent decompression by endoprosthesis [ J ]. Surgery, 1992,111(5) :562-568.
8Topal B, Vromman K, Aerts R, et al. Hospital cost categories of one-stage versus two-stage management of common bile duct stones[ Jl. Surg Endosc ,2010,24(2) :413 -416.
9Ebner S, Rechner J, Belier S, et al. Laparoscopic manage- mentof common bile duct stones [ J ]. Surg Endosc, 2004, 18(5) :762 -765.
