RT Journal Article SR Electronic T1 Small Bowel Disorders JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 456 OP 456 DO 10.1136/gut.49.3.456e VO 49 IS 3 A1 F BIAGO YR 2001 UL http://gut.bmj.com/content/49/3/456.6.abstract AB