RT Journal Article SR Electronic T1 Reply JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 413 OP 413 DO 10.1136/gut.29.3.413 VO 29 IS 3 A1 G Mclauchlan YR 1988 UL http://gut.bmj.com/content/29/3/413.1.abstract AB