title: The query corner. Cholangiographic distinction between common bile duct calculi and air bubbles.
authors.affiliation: University of Washington, Seattle, WA, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Nelson
mesh_terms: D000388:Air; D002758:Cholangiography; D002760:Cholangiopancreatography, Endoscopic Retrograde; D003937:Diagnosis, Differential; D042882:Gallstones / Q000000981:diagnostic imaging*; D006801:Humans