Comparability of localization data in transnasal and transoral esophagogastroduodenoscopy.
Aymaz
Serhat
S
Department of Internal Medicine, Holweide Hospital, City of Cologne Hospitals, Ltd,, Cologne, Germany. aymaz@kliniken-koeln.de
Krakamp
Bernd
B
Kirschberg
Oliver
O
Lefering
Rolf
R