[Round table discussion: development of double contrast radiography].
D000724:Ancylostomiasis; D001466:Barium Sulfate; D006801:Humans; D011859:Radiography; D013276:Stomach Ulcer / Q000000981:diagnostic imaging; D013679:Technology, Radiologic; D014385:Tuberculosis, Gastrointestinal / Q000000981:diagnostic imaging