[1] Univ S Australia, Sch Nursing & Midwifery, GPO Box 2471, Adelaide, SA 5001, Australia
[2] Univ Adelaide, Sch Psychol, Adelaide, SA, Australia
[3] Royal Adelaide Hosp, Dept Gastroenterol & Hepatol, IBD Serv, Adelaide, SA 5000, Australia
[4] Univ Adelaide, Sch Med, Adelaide, SA, Australia
[5] Univ Manitoba, Inflammatory Bowel Dis Clin & Res Ctr, Winnipeg, MB, Canada
[6] Univ Manitoba, Dept Internal Med, Winnipeg, MB, Canada
[7] Univ Manitoba, Dept Clin Hlth Psychol, Winnipeg, MB, Canada
[8] Ist Clin Humanitas, Dept Surg, Milan, Italy
[9] Univ Milan, Fac Med, Dept Gen Surg 3, Milan, Italy
[10] Erasmus MC, Dept Gastroenterol & Hepatol, Rotterdam, Netherlands
[11] Univ London, Barts & London Sch Med & Dent, Ctr Digest Dis, London, England
[12] Med Univ Vienna, Div Gastroenterol & Hepatol, Dept Internal Med 3, Vienna, Austria