RT Journal Article SR Electronic T1 Cognitive behavioural model of irritable bowel syndrome JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1039 OP 1041 DO 10.1136/gut.2006.117143 VO 56 IS 8 A1 Creed, Francis YR 2007 UL http://gut.bmj.com/content/56/8/1039.abstract AB