[1] Radboud Univ Nijmegen, Med Ctr, Inflammatory Bowel Dis Center, Dept Gastroenterol & Hepatol, Nijmegen, Netherlands
[2] Amsterdam Univ Med Ctr Locat AMC, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[3] Groningen Univ Med Ctr, Dept Gastroenterol & Hepatol, Groningen, Netherlands
[4] Erasmus MC, Dept Gastroenterol & Hepatol, Rotterdam, Netherlands
[5] Jeroen Bosch Hosp, Dept Gastroenterol & Hepatol, Den Bosch, Netherlands
[6] Rijnstate Hosp, Dept Gastroenterol & Hepatol, Arnhem, Netherlands
[7] Amsterdam Univ Med Ctr Locat VUmc, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[8] Radboud Univ Nijmegen, Med Ctr, Dept Pathol, Nijmegen, Netherlands
[9] Univ Alberta, Div Gastroenterol, Dept Med, Edmonton, AB, Canada