title: Letter: Oral cholecystography: a sign of gall-bladder disease.
mesh_terms: D000284:Administration, Oral; D001653:Bile Ducts, Intrahepatic / Q000000981:diagnostic imaging; D002758:Cholangiography; D002765:Cholecystography / Q000379:methods*; D003287:Contrast Media / Q000008:administration & dosage; D005705:Gallbladder Diseases / Q000000981:diagnostic imaging*; D006801:Humans
chemical_list: D003287:Contrast Media