[1] Univ Hosp Copenhagen Amager, Hvidovre, Denmark
[2] Hvidovre Univ Hosp, Gastrounit Med Div, Hvidovre, Denmark
[3] Univ Tartu, Div Gastroenterol, Tartu Univ Hosp, Tartu, Estonia
[4] Herning Cent Hosp, Dept Med, Herning, Denmark
[5] Natl Hosp Faroe Islands, Dept Med, Torshavn, Faroe Islands, Denmark
[6] Univ Hosp Ctr Zagreb, Dept Gastroenterol Hepatol & Nutr, Zagreb, Croatia
[7] Slagelse Reg Hosp, Dept Gastroenterol, Slagelse, Denmark
[8] Odense Univ Hosp, Dept Med Gastroenterol, Odense, Denmark
[9] Orebro Univ, Dept Gastroenterol, Fac Med & Hlth, Orebro, Sweden
[10] Hull Univ Teaching Hosp NHS Trust Hull, Dept Gastroenterol, Kingston Upon Hull, N Humberside, England
[11] Univ Med Victor Babes, Gastroenterol Clin, Timisoara, Romania
[12] Imperial Coll London, IBD Dept, London, England
[13] Tampere Univ Hosp, Dept Gastroenterol & Alimentary Tract Surg, Tampere, Finland
[14] Tampere Univ, Fac Med & Hlth Technol, Tampere, Finland
[15] Viborg Hosp, Dept Med, Viborg, Denmark
[16] Univ Hosp Southern Denmark, Inst Reg Hlth Res, Res Unit Mol Diagnost & Clin Res, Aabenraa, Denmark
[17] Univ Hosp Southern Denmark, Inst Reg Hlth Res, Res Unit Mol Diagnost & Clin Res, Sonderborg, Denmark
[18] Univ Southern Denmark, Inst Mol Med, Odense, Denmark
[19] Univ Southern Denmark, Inst Reg Res, Odense, Denmark
[20] Univ Hosp, Ioannina, Greece
[21] Univ Ioannina, Div Gastroenterol, Ioannina, Greece
[22] Nicolae Testemitanu State Univ Med & Pharm Moldov, Fac Med, Kishinev, Moldova
[23] Mater Dei Hosp Malta, Div Gastroenterol, Msida, Malta
[24] Lithuanian Univ Hlth Sci, Dept Gastroenterol, Kaunas, Lithuania
[25] Amiens Univ Hosp, Gastroenterol Unit, Amiens, France
[26] Amer Gastroenterol Ctr, Dept Gastroenterol, Nicosia, Cyprus
[27] Univ Padua, Dept Surg Oncol & Gastroenterol Sci, Padua, Italy
[28] Xerencia Xest Integrada Vigo SERGAS, Dept Gastroenterol, Vigo, Spain
[29] SERGAS UVIGO Vigo Spain, Galicia Hlth Res Inst IIS Galicia SERGAS UVIGO, Res Grp Digest Dis, Vigo, Spain
[30] Ribera POVISA Hosp, Dept Gastroenterol, Vigo, Spain
[31] Univ Hosp Copenhagen, Dept Gastroenterol, Herlev Hosp, Herlev, Denmark
[32] Univ Hosp Copenhagen, Dept Gastroenterol, North Zealand Hosp, Hillerod, Denmark