[1] Sheba Med Ctr, Dept Gastroenterol, Ramat Gan, Israel
[2] Tel Aviv Univ, Sackler Med Sch, Tel Aviv, Israel
[3] McGill Univ, Div Gastroenterol, Hlth Ctr, Montreal, PQ, Canada
[4] Univ Med Ctr Ljubljana, Dept Gastroenterol, Ljubljana, Slovenia
[5] ULB, Dept Gastroenterol, Hop Erasme, Brussels, Belgium
[6] Sch Med Federico II Naples, Dept Clin Med & Surg, Gastroenterol, Naples, Italy
[7] Western Gen Hosp, Edinburgh IBD Unit, Edinburgh, Midlothian, Scotland
[8] Hosp Clin Univ Santiago de Compostela, Serv Aparato Digest, Unidad EII, Santiago De Compostela, A Coruna, Spain
[9] Univ Hosp Southampton NHS Fdn Trust, Dept Gastroenterol, Southampton, Hants, England
[10] Ghent Univ Hosp, Dept Gastroenterol, Ghent, Belgium
[11] Univ Hosp Ctr Zagreb, Dept Gastroenterol & Hepatol, Zagreb, Croatia
[12] Ctr Gastroenterol & Hepatol, Zurich, Switzerland
[13] Maastricht Univ, Med Ctr, Dept Internal Med, Div Gastroenterol & Hepatol, Maastricht, Netherlands
[14] Radboud Univ Nijmegen, Med Ctr, Dept Gastroenterol & Hepatol, Nijmegen, Netherlands
[15] Hull Univ Teaching Hosp NHS Trust, IBD Unit, Kingston Upon Hull, N Humberside, England
[16] Hosp Univ Puerta de Hierro, Gastroenterol & Hepatol Dept, IBD Unit, Madrid, Spain
[17] CHU Toulouse Rangueil, Serv Gastroenterol & Nutr, Toulouse, France
[18] Hebrew Univ Jerusalem, Shaare Zedek Med Ctr, Med Sch, IBD MOM Unit,Digest Dis Inst, Jerusalem, Israel
[19] St Michaels Hosp, Dept Gastroenterol & Gastrointestinal Endoscopy, Bratislava, Slovakia
[20] Rambam Hlth Care Campus, Gastroenterol Dept, Haifa, Israel
[21] Technion Israel Inst Technol, Bruce Rappaport Sch Med, Haifa, Israel
[22] Univ Coll Dublin, St Vincents Univ Hosp, Ctr Colorectal Dis, Dublin, Ireland
[23] Univ Coll Dublin, Sch Med, Dublin, Ireland
[24] Emek Med Ctr Afula Israel, Ellen & Pinchas Mamber Inst Gastroenterol & Liver, IBD Unit, Afula, Israel
[25] Univ Szeged, Dept Med 1, Fac Med, Szeged, Hungary
[26] Univ Ljubljana, Med Fac, Ljubljana, Slovenia