[1] Hosp Clin Barcelona, Barcelona, Spain
[2] Mayo Clin, Coll Med & Sci, Div Gastroenterol & Hepatol, Rochester, MN USA
[3] Abbvie Inc, Mettawa, IL USA
[4] Univ Lorraine, Nancy, France
[5] Univ Amsterdam, Med Ctr, Ctr Inflammatory Bowel Dis, Amsterdam, Netherlands
[6] Univ Calgary, Cumming Sch Med, Gastrointestinal Res, Inflammatory Bowel Dis Clin, Calgary, AB, Canada
[7] Med Univ Vienna, Vienna, Austria
[8] CHU Liege, Univ Hosp, Liege, Belgium
[9] Sun Yat Sen Univ, Affiliated Hosp 1, Guangzhou, Peoples R China
[10] Sapporo Med Univ, Sapporo, Hokkaido, Japan
[11] Mater Hosp Brisbane, Brisbane, Qld, Australia
[12] Univ Calif San Diego, San Diego, CA 92103 USA
[13] Icahn Sch Med Mt Sinai, Div Gastroenterol, New York, NY 10029 USA