RT Journal Article SR Electronic T1 FRIDAY 7TH APRIL JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP A50 OP A71 DO 10.1136/gut.36.Suppl_1.A50 VO 36 IS Suppl 1 YR 1995 UL http://gut.bmj.com/content/36/Suppl_1/A50.abstract AB