title: The significance of elevated ampullary sphincter pressure.
authors.forename: W M
authors.initials: WM
authors.lastname: Steinberg
mesh_terms: D000005:Abdomen; D014670:Ampulla of Vater / Q000503:physiopathology*; D002760:Cholangiopancreatography, Endoscopic Retrograde; D006801:Humans; D010146:Pain / Q000209:etiology*; D011312:Pressure; D009803:Sphincter of Oddi / Q000503:physiopathology*