[1] Acad Med Ctr, Dept Gastroenterol & Hepatol, NL-1100 DE Amsterdam, Netherlands
[2] Acad Med Ctr, NL-1100 DE Amsterdam, Netherlands
[3] St Antonius Hosp, Dept Gastroenterol & Hepatol, Nieuwegein, Netherlands
[4] Med Ctr Alkmaar, Dept Gastroenterol & Hepatol, Alkmaar, Netherlands
[5] Isala Clin, Dept Gastroenterol & Hepatol, Zwolle, Netherlands
[6] Vrije Univ Amsterdam Med Ctr, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[7] Canisius Wilhelmina Hosp, Dept Gastroenterol & Hepatol, Nijmegen, Netherlands
[8] Diagnost Serv Sanquin, Amsterdam, Netherlands
[9] Gelderse Vallei Hosp, Dept Gastroenterol & Hepatol, Ede, Netherlands