[1] St Pauls Hosp, Vancouver, BC, Canada
[2] Med Coll Wisconsin, Milwaukee, WI 53226 USA
[3] Univ Toronto, Mt Sinai Hosp, Toronto, ON, Canada
[4] Evidera, Montreal, PQ, Canada
[5] Northwestern Univ, Feinberg Sch Med, Evanston, IL USA
[6] Texas Digest Dis Consultants, Southlake, TX USA
[7] Democritus Univ Thrace, Univ Hosp Alexandroupolis, Alexandroupolis, Greece
[8] Laikon Gen Hosp, Athens, Greece
[9] Sheba Med Ctr Ramat Gan, Tel Aviv, Israel
[10] Sackler Sch Med, Tel Aviv, Israel
[11] Tzane Gen Hosp Piraeus, Piraeus, Greece
[12] Alexandra Reg Gen Hosp, Athens, Greece
[13] Advent Hlth, Orlando, FL USA
[14] Univ Chicago Med, Inflammatory Bowel Dis Ctr, Chicago, IL USA
[15] Covenant Hlth Grey Nuns Community Hosp, Div Gastroenterol, Edmonton, AB, Canada
[16] PerCuro Clin Res, Victoria, BC, Canada
[17] Theagenio Anticanc Hosp Thessaloniki, Thessaloniki, Greece
[18] Evidera, London, England
[19] Takeda Pharmaceut Int Singapore, Singapore, Singapore
[20] Evangelismos Med Ctr, Athens, Greece