RT Journal Article SR Electronic T1 Irritable Bowel Syndrome: Psychosocial Assessment and Treatment JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 583 OP 584 DO 10.1136/gut.50.4.583-a VO 50 IS 4 A1 T R Bell YR 2002 UL http://gut.bmj.com/content/50/4/583.2.abstract AB