Aymaz, Serhat Comparability of localization data in transnasal and transoral esophagogastroduodenoscopy. [electronic resource] - BMC gastroenterology Oct 2010 - 116 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1471-230X Standard No.: 10.1186/1471-230X-10-116 doi Subjects--Topical Terms: AdultEndoscopes, GastrointestinalEndoscopy, Gastrointestinal--methodsEquipment DesignGastrointestinal Diseases--diagnosisHumansMouthNosePain MeasurementReproducibility of Results