title: A bile duct stone cannot be found.
authors.forename: M H
authors.initials: MH
authors.lastname: Thompson
mesh_terms: D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000379:methods; D042882:Gallstones / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D016717:Sphincterotomy, Endoscopic / Q000379:methods