title: Problems in endoscopic sphincteropapillotomy.
authors.forename: Y C
authors.initials: YC
authors.lastname: Yang
authors.forename: J I
authors.initials: JI
authors.lastname: Myeong
authors.forename: H S
authors.initials: HS
authors.lastname: Yeo
authors.forename: H B
authors.initials: HB
authors.lastname: Park
mesh_terms: D000328:Adult; D000368:Aged; D002760:Cholangiopancreatography, Endoscopic Retrograde; D004724:Endoscopy / Q000009:adverse effects; D005260:Female; D042882:Gallstones / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000628:therapy*; D006470:Hemorrhage / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography