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