title: Barium studies in the aged.
mesh_terms: D001464:Barium; D001466:Barium Sulfate; D041981:Gastrointestinal Tract / Q000000981:diagnostic imaging*; D005853:Geriatrics; D011859:Radiography
chemical_list: D001464:Barium; D001466:Barium Sulfate
keywords: BARIUM SULFATE; GASTROINTESTINAL SYSTEM/radiography; GERIATRICS