title: The role of endoscopic ultrasonography in the biliary tract: ampullary tumors.
authors.affiliation: Department of Gastroenterology, University of Amsterdam, The Netherlands.
authors.forename: P
authors.initials: P
authors.lastname: Fockens
mesh_terms: D014670:Ampulla of Vater / Q000000981:diagnostic imaging* / Q000473:pathology; D001659:Biliary Tract / Q000000981:diagnostic imaging* / Q000473:pathology; D003138:Common Bile Duct Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D016145:Endoscopy, Digestive System; D006801:Humans; D009367:Neoplasm Staging; D018084:Ultrasonography, Interventional