[1] Univ Amsterdam, Acad Med Ctr, Dept Gastroenterol, NL-1105 AZ Amsterdam, Netherlands
[2] Univ N Carolina, Sch Med, Div Gastroenterol & Hepatol, Multidisciplinary IBD Ctr, Chapel Hill, NC USA
[3] Univ Toronto, Mt Sinai Hosp, Toronto, ON M5S 1A1, Canada
[4] Univ Toronto, Zane Cohen Ctr Digest Dis, Toronto, ON M5S 1A1, Canada
[5] AbbVie, Global Med Affairs Gastroenterol, Rungis, France
[6] Katholieke Univ Leuven, Dept Internal Med, Div Gastroenterol, Leuven, Belgium