RT Journal Article SR Electronic T1 Infections. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP S25 OP S28 DO 10.1136/gut.32.Suppl.S25 VO 32 IS Suppl A1 N Rolando A1 R J Wyke YR 1991 UL http://gut.bmj.com/content/32/supplement/S25.abstract AB