[1] Amsterdam UMC, Locat AMC, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[2] Radboud Univ Nijmegen, Med Ctr, Dept Gastroenterol & Hepatol, Nijmegen, Netherlands
[3] Univ Med Ctr Utrecht, Dept Gastroenterol & Hepatol, Utrecht, Netherlands
[4] Leiden Univ, Med Ctr, Dept Gastroenterol & Hepatol, Leiden, Netherlands
[5] Med Ctr Leeuwarden, Dept Gastroenterol & Hepatol, Leeuwarden, Netherlands
[6] Onze Lieve Vrouw Hosp, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[7] Univ Alberta, Dept Med, Div Gastroenterol, Edmonton, AB, Canada
[8] Haaglanden Med Ctr, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[9] Univ Med Ctr Groningen, Dept Gastroenterol & Hepatol, Groningen, Netherlands