[1] St Antonius Hosp, Dept Gastroenterol & Hepatol, Nieuwegein, Netherlands
[2] Univ Amsterdam, Dept Gastroenterol & Hepatol, Locat VUMC, Med Ctr, Amsterdam, Netherlands
[3] Univ Med Ctr Groningen, Dept Gastroenterol & Hepatol, Groningen, Netherlands
[4] Leiden Univ, Med Ctr, Dept Gastroenterol & Hepatol, Leiden, Netherlands
[5] Maastricht Univ, Med Ctr, Dept Gastroenterol & Hepatol, Maastricht, Netherlands