title: Upper intestinal endoscopy in the RAF: the physician's view.
mesh_terms: D000337:Aerospace Medicine; D004038:Diet, Reducing; D004381:Duodenal Ulcer / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging; D004724:Endoscopy; D004942:Esophagitis, Peptic / Q000150:complications / Q000175:diagnosis / Q000628:therapy; D005336:Fiber Optic Technology; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006801:Humans; D011859:Radiography; D006113:United Kingdom