RT Journal Article SR Electronic T1 Reply JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1026 OP 1027 DO 10.1136/gut.30.7.1026 VO 30 IS 7 A1 Bardhan, K D YR 1989 UL http://gut.bmj.com/content/30/7/1026.abstract AB