[1] Univ Med Ctr Utrecht, Dept Gastroenterol & Hepatol, Utrecht, Netherlands
[2] Leiden Univ, Med Ctr, Sect Med Psychol, Leiden, Netherlands
[3] Onze Lieve Vrouw Hosp, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[4] Jeroen Bosch Hosp, Dept Gastroenterol & Hepatol, Shertogenbosch, Netherlands
[5] Diakonessen Hosp, Dept Gastroenterol & Hepatol, Utrecht, Netherlands
[6] Leiden Univ, Dept Gastroenterol & Hepatol, Med Ctr, Leiden, Netherlands
[7] Maastricht Univ, Med Ctr, Dept Gastroenterol & Hepatol, NL-6200 MD Maastricht, Netherlands
[8] Univ Amsterdam, Acad Med Ctr, Dept Med Oncol, Meibergdreef 9, NL-1105 AZ Amsterdam, Netherlands