Cost restraints and a better upper gastrointestinal examination.
D000388:Air; D003365:Costs and Cost Analysis; D004064:Digestive System / Q000000981:diagnostic imaging*; D004526:Efficiency; D005471:Fluoroscopy; D006801:Humans; D008487:Medical History Taking; D011187:Posture; D011446:Prospective Studies; D011786:Quality Control; D012017:Referral and Consultation; D013679:Technology, Radiologic