1. Department of Gastroenterology and Hepatology, Radboud University Medical Centre , Nijmegen , The Netherlands
2. Department of Gastroenterology and Hepatology, University Medical Centre Groningen , Groningen , The Netherlands
3. Department of Gastroenterology and Hepatology, Amsterdam University Medical Centre, VU University, AGEM Research Institute , Amsterdam , The Netherlands
4. Department of Gastroenterology and Hepatology, University Medical Centre Utrecht, Utrecht , The Netherlands
5. Department of Gastroenterology and Hepatology, Medisch Spectrum Twente , Enschede , The Netherlands
6. Department of Gastroenterology and Hepatology, Jeroen Bosch Ziekenhuis , ‘ s-Hertogenbosch , The Netherlands
7. Division of Gastroenterology, Department of Medicine, University of Alberta , Edmonton, AB , Canada