Experience with endoscopic sphincterotomy in the GDR. A collective study of 6 centres.
D014670:Ampulla of Vater / Q000601:surgery*; D003137:Common Bile Duct Diseases / Q000601:surgery; D003251:Constriction, Pathologic; D004724:Endoscopy; D042882:Gallstones / Q000601:surgery*; D006801:Humans; D011183:Postoperative Complications; D009803:Sphincter of Oddi / Q000601:surgery*