title: A review of 80 barium meal examinations in patients with rheumatoid arthritis: were they necessary?
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications*; D001466:Barium Sulfate; D005767:Gastrointestinal Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D011859:Radiography; D012189:Retrospective Studies
chemical_list: D001466:Barium Sulfate