RT Journal Article SR Electronic T1 Summary JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP v28 OP v28 DO 10.1136/gut.51.suppl_5.v28 VO 51 IS suppl 5 YR 2002 UL http://gut.bmj.com/content/51/suppl_5/v28.abstract AB