title: UGI studies: radiologic vs endoscopic.
authors: D J
authors: DJ
authors: Ott
authors: D W
authors: DW
authors: Gelfand
authors: Y M
authors: YM
authors: Chen
mesh_terms: D003365:Costs and Cost Analysis; D004724:Endoscopy / Q000191:economics; D005767:Gastrointestinal Diseases / Q000000981:diagnostic imaging* / Q000191:economics; D006801:Humans; D011859:Radiography