5Habib F A, Kolachalam R B, Khilnani R, et al. Role of laparoscopic cholecystectomy in themanagement of gangrenous cholecystitis[J]. Am J Surg, 2001, 181 (1): 71-75.
6Jonansson M, Thune A, Blomqvist A, et al. Management of acute cholecystitis in the laparoscopic era: results of a prospective, randomized clinical trial [J]. J Gastrointest Surg, 2003, 7: 642-645.
7Kolla S B, Aggarwal S, Kumar A, et al. Early versus delayed laparoscopic cholecystectomy for acute cholecystitis: a prospective randomized trial[J]. Surg Endosc, 2004, 18 (9) : 1323-1327.
8Yamashita Y, Takada T, Kawarada Y, et al. Surgical treatment of patients with acute cholecystitis: Tokyo Guidelines [J]. J Hepatobiliary Pancreat Surg, 2007, 14 (1): 91-97.
9Pavlidis TE. Laparoscopic cholecystectomy for gangrenous cholecystitis in the elderly I.aparoendosc [ J ] . Adv Surg Tech A, 2006,16(1) :79 -80.
10Livingston EH, Rege RV. Anationwide study of conversion from laparoscopic to open cholecystectomy [ J ]. Am J Surg, 2004,188(3) :205 -211.
