RT Journal Article SR Electronic T1 Authors' response JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 632 OP 633 DO 10.1136/gutjnl-2011-301055 VO 61 IS 4 A1 Habtezion, Aida A1 Omary, M Bishr YR 2012 UL http://gut.bmj.com/content/61/4/632.2.abstract AB