1. Department of Gastroenterology and Hepatology; Erasmus MC University Medical Center; Rotterdam The Netherlands
2. Department of Gastroenterology and Hepatology; Amsterdam UMC; Vrije Universiteit Amsterdam; AG&M Research Institute; Amsterdam The Netherlands
3. Department of Gastroenterology and Hepatology; University of Groningen and University Medical Center Groningen; Groningen The Netherlands
4. Department of Gastroenterology and Hepatology; Franciscus Gasthuis & Vlietland; Rotterdam The Netherlands
5. Department of Pharmacology; Zuyderland Medical Center; Heerlen-Sittard-Geleen The Netherlands
6. Department of Gastroenterology and Hepatology; Radboud University Medical Center; Nijmegen The Netherlands