1. Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, The Netherlands
2. Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, location VUMC, Amsterdam, The Netherlands
3. Department of Gastroenterology and Hepatology, University Medical Center Groningen, Groningen, The Netherlands
4. Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, The Netherlands
5. Department of Gastroenterology and Hepatology, Maastricht University Medical Center, Maastricht, The Netherlands