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A Novel Retraction Device for Endoscopic Submucosal Dissection (ESD): A Multicenter Retrospective Study

Specific Study Aims: Study Aim 1: The primary aim of this study was to determine the technical success of ESD using the retraction device by determining completeness of the resection (¬en-bloc vs incomplete). Study Aim 2: We aim to determine the safety of the device with regards to perforation and significant bleeding. Study Aim 3: We aim to determine the success rate of device deployment, if it was beneficial for the ESD procedure and time spent required to develop the device