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4. The long term fate of the gallbladder after endoscopic sphincterotomy: Complete follow up study of 122 patients;Tanaka, M.; Ikeda, S.; Yoshimoto, H.; Matsumoto, S.;Am J Surg,1987
5. Early and late complications after endoscopic sphincterotomy for biliary lithiasis with and without gallbladder in-situ;Escourrou, J.; Cordova, A.J.; Lazorthes, F.; Frexinos, J.; Ribet, A.;Gut,1984