[1] Rijnstate Hosp, Clin Res Ctr, Wagnerlaan 55, NL-6815 AD Arnhem, Netherlands
[2] Univ Twente, Fac Behav Management & Social Sci, Tech Med Ctr, Dept Hlth Technol & Serv Res, Hallenweg 5, NL-7522 NH Enschede, Netherlands
[3] Locat Univ Amsterdam, Dept Gastroenterol & Hepatol, Amsterdam Gastroenterol Endocrinol Metab, Amsterdam UMC, De Boelelaan 1117, NL-1081 HV Amsterdam, Netherlands
[4] St Antonius Hosp, Dept Res & Dev, Koekoekslaan 1, NL-3435 CM Nieuwegein, Netherlands
[5] St Antonius Hosp, Dept Gastroenterol & Hepatol, Koekoekslaan 1, NL-3435 CM Nieuwegein, Netherlands
[6] Leiden Univ, Dept Gastroenterol & Hepatol, Med Ctr, Albinusdreef 2, NL-2333ZA Leiden, Netherlands
[7] Rijnstate Hosp, Dept Gastroenterol, Wagnerlaan 55, NL-6815 AD Arnhem, Netherlands