RT Journal Article SR Electronic T1 Correction JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 531 OP 531 DO 10.1136/gutjnl-2011-300178corr1 VO 65 IS 3 YR 2016 UL http://gut.bmj.com/content/65/3/531.abstract AB