A new and simple approach to air-contrast studies of the stomach and duodenum.
D003287:Contrast Media; D004386:Duodenum / Q000000981:diagnostic imaging*; D006801:Humans; D011859:Radiography; D013270:Stomach / Q000000981:diagnostic imaging*
D003287:Contrast Media
CONTRAST MEDIA; DUODENUM/radiography; STOMACH/radiography