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 1204 OP 1204 VO 54 IS 8 A1 P J Whorwell A1 K J Bentley A1 W Atkinson A1 T A Sheldon YR 2005 UL http://gut.bmj.com/content/54/8/1204.1.abstract AB