[1] Univ Hosp Leuven, Dpt Gastroenterol & Hepatol, Leuven, Belgium
[2] Katholieke Univ Leuven, Dept Chron Dis & Metab, Translat Res Gastrointestinal Disorders, Leuven, Belgium
[3] Univ Hosp CHU Liege, Hepatogastroenterol & Digest Oncol, Liege, Belgium
[4] Ghent Univ Hosp, Dept Gastroenterol, Ghent, Belgium
[5] Univ Ghent, Dept Internal Med & Paediat, Ghent, Belgium
[6] Aarhus Univ Hosp, Gastroenterol, Aarhus, Denmark
[7] Fdn Policlin A Gemelli IRCSS, Gastroenterol, Rome, Italy
[8] Comenius Univ, Dept Gastroenterol, Jessenius Fac Med, Univ Hosp Martin, Bratislava, Slovakia
[9] Guys & St Thomas NHS Fdn Trust, Gastroenterol, London, England
[10] Univ Milano Bicocca, San Gerardo Hosp, Gastroenterol, Monza, Italy
[11] San Filippo Neri Hosp, Gastroenterol, Rome, Italy
[12] Hosp Univ Canarias Spain, Gastroenterol, Gran Canaria, Spain
[13] Hosp Univ Marques de Valdecilla, IDIVAL, Valdecilla, Spain
[14] Hosp Intana Leonor, Gastroenterol, Madrid, Spain
[15] Univ Milan, Dept Pathophysiol & Transplantat, Milan, Italy
[16] Univ Paduo, Azienda Osped Padova, Gastroenterol, Padua, Italy
[17] Univ Med Ctr, Gastroenterol, Ljubiljana, Slovenia
[18] Cardarelli Hosp Naples, Gastroenterol, Naples, Italy
[19] Univ Torino, Gastroenterol, Turin, Italy
[20] AZ Sint Maarten, Gastroenterol, Mechelen, Belgium
[21] Int Gemeinschaftspraxis Verdauungs, Dpt Gastroenterol, Leipzig, Germany
[22] Chelsea & Westminster NHS Fdn Trust, Gastroenterol, London, England
[23] Univ Paduo, Azienda Osped Padova, Gastroenterol, Padua, Italy
[24] Rabin Med Ctr, Div Gastroenterol, Petah Tiqwa, Israel
[25] Cleveland Clin, Dept Inflammat & Immun, Lerner Res Inst, Cleveland, OH USA