1. Benjamin SB: Procedure-related complications. In Yamada T, Alpers D, Owyang C, et al (eds): Textbook of Gastroenterology, vol. 2. Philadelphia, JB Lippincott, pp 2676–2683
2. Recent results of elective open cholecystectomy in a North American and a European center. Comparison of complications and risk factors;Clavien;Ann Surg,1991
3. Proposed classification of complications of surgery with examples of utility in cholecystectomy;Clavien;Surgery,1992
4. Outcomes of endoscopy procedures: Struggling towards definitions;Cotton;Gastrointest Endosc,1994
5. Endoscopic sphincterotomy complications and their management: An attempt at consensus;Cotton;Gastrointest Endosc,1991