title: Evaluation of double contrast barium meal study of stomach and duodenum.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001466:Barium Sulfate; D004378:Duodenal Diseases / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013272:Stomach Diseases / Q000000981:diagnostic imaging*
chemical_list: D001466:Barium Sulfate