RT Journal Article SR Electronic T1 Authors' response JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1238 OP 1238 DO 10.1136/gutjnl-2011-301622 VO 61 IS 8 A1 Richard F A Logan A1 Sarah Hearnshaw A1 Vipul Jairath A1 Simon Travis A1 Kelvin R Palmer YR 2012 UL http://gut.bmj.com/content/61/8/1238.2.abstract AB