title: Letter: Gravity as cause of "colon cutoff".
mesh_terms: D003106:Colon / Q000000981:diagnostic imaging*; D003108:Colonic Diseases / Q000000981:diagnostic imaging; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging; D008722:Methods; D011187:Posture; D011859:Radiography