[On a method of roentgenological examination of the small intestine with barium administration through a duodenal sound].
D001464:Barium; D004386:Duodenum; D006801:Humans; D007421:Intestine, Small; D007422:Intestines; D007440:Intubation; D007441:Intubation, Gastrointestinal
D001464:Barium
BARIUM; DUODENAL INTUBATION; INTESTINE, SMALL