4Merriam LT,Kanaan SA,Dawes LG,et al.Gangrenous cholecystitis:analysis of risk factors and experience with laparoscopic cholecystectomy[J].Surgery,1999,126(4):680-685.
5Kanaan SA,Murayama KM,Merriam LT,et al.Risk factors for conversion of laparoscopic to open cholecystectomy[J].J Surg Res,2002,106(1):20-24.
6Luca. s. The removal of common bile duct stones under ERCPbefore LC[J]. Am J Gastrocnterol, 1996, 91(7) : 1326 - 1328.