RT Journal Article SR Electronic T1 Digest JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP i OP ii DO 10.1136/gut.2009.198820 VO 58 IS 11 A2 Spiller, Robin A2 Vermeire, Severine YR 2009 UL http://gut.bmj.com/content/58/11/i.abstract AB