RT Journal Article SR Electronic T1 Mortality rate after pneumatic dilatation for achalasia JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP gutjnl-2019-319513 DO 10.1136/gutjnl-2019-319513 A1 Froukje B van Hoeij A1 Albert J Bredenoord YR 2019 UL http://gut.bmj.com/content/early/2019/08/05/gutjnl-2019-319513.abstract AB