RT Journal Article SR Electronic T1 Case of early Barrett cancer following peroral endoscopic myotomy JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP gutjnl-2019-318950 DO 10.1136/gutjnl-2019-318950 A1 Yervant Ichkhanian A1 Petros Benias A1 Mouen A Khashab YR 2019 UL http://gut.bmj.com/content/early/2019/08/08/gutjnl-2019-318950.abstract AB