RT Journal Article SR Electronic T1 IgG antibodies to foods in IBS JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 567 OP 567 VO 54 IS 4 A1 J E D Mawdsley A1 P Irving A1 R Makins YR 2005 UL http://gut.bmj.com/content/54/4/567.1.abstract AB