Does cholecystectomy after endoscopic sphincterotomy prevent the recurrence of biliary complications? - Lai,K.H.; Lin,L.F.; Lo,G.H.; Cheng,J.S.; Huang,R.L.; Lin,C.K.; Huang,J.S.; Hsu,P.I.; Peng,N.J.; Ger,L.P. (Gastrointest Endosc, 1999)