[Investigation of the method of double contrast examination of the colon].
D000293:Adolescent; D000328:Adult; D000368:Aged; D001466:Barium Sulfate; D002648:Child; D003106:Colon / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography
D001466:Barium Sulfate