[1] Amsterdam Univ Med Ctr, Amsterdam, Netherlands
[2] Hosp CHU Liege, Liege, Belgium
[3] Mayo Clin, Coll Med & Sci, Rochester, MN USA
[4] Cleveland Clin Fdn, 9500 Euclid Ave, Cleveland, OH 44195 USA
[5] Western Univ, London, ON, Canada
[6] Univ Porto, Porto, Portugal
[7] Sao Joao Univ Hosp Ctr, Porto, Portugal
[8] Sapporo Med Univ, Sch Med, Sapporo, Hokkaido, Japan
[9] AbbVie Inc, N Chicago, IL USA
[10] Intesto Crohn & Colitis Ctr, Bern, Switzerland
[11] Intesto Crohn & Colitis Ctr, Fribourg, Switzerland
[12] Bern Univ Hosp, Visceral Surg & Med, Bern, Switzerland
[13] Goethe Univ Hosp, Frankfurt, Germany