RT Journal Article SR Electronic T1 The Gastroenterology Assistant JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 354 OP 355 DO 10.1136/gut.23.4.354-b VO 23 IS 4 A1 Thompson, R D H YR 1982 UL http://gut.bmj.com/content/23/4/354.3.abstract AB