Endoscopic papillectomy: a novel approach to difficult cannulation.
Rollhauser
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al-Kawas
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FH
D014670:Ampulla of Vater / Q000473:pathology / Q000601:surgery*; D003137:Common Bile Duct Diseases / Q000473:pathology / Q000601:surgery*; D006801:Humans; D016717:Sphincterotomy, Endoscopic / Q000295:instrumentation / Q000379:methods*; D016896:Treatment Outcome