title: Upper intestinal endoscopy in the RAF: the radiologist's view.
mesh_terms: D000337:Aerospace Medicine; D001466:Barium Sulfate; D003951:Diagnostic Errors; D004381:Duodenal Ulcer / Q000175:diagnosis / Q000000981:diagnostic imaging; D004724:Endoscopy; D005767:Gastrointestinal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D011859:Radiography; D013274:Stomach Neoplasms / Q000175:diagnosis; D013276:Stomach Ulcer / Q000175:diagnosis; D006113:United Kingdom
chemical_list: D001466:Barium Sulfate