[Experience with mass examination of the stomach and duodenum with barium sulfate charged with carbon dioxide].
D000328:Adult; D000368:Aged; D001466:Barium Sulfate; D002245:Carbon Dioxide; D004378:Duodenal Diseases / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D011859:Radiography; D013272:Stomach Diseases / Q000000981:diagnostic imaging*