1. Department of Gastroenterology and Hepatology Radboudumc Nijmegen The Netherlands
2. Department of Research and Development St. Antonius Hospital Nieuwegein The Netherlands
3. Department of Gastroenterology and Hepatology Hagaziekenhuis The Hague The Netherlands
4. Department of Gastroenterology and Hepatology Erasmus Medical Centre Rotterdam the Netherlands
5. Department of Gastroenterology and Hepatology Amsterdam Gastroenterology Endocrinology Metabolism Amsterdam UMC Amsterdam the Netherlands
6. Department of Gastroenterology and Hepatology Leiden University medical Centre Leiden The Netherlands
7. Department of Gastroenterology and Hepatology Isala Clinics Zwolle The Netherlands
8. Department of Surgery St. Antonius Hospital Nieuwegein The Netherlands
9. Department of Gastroenterology and Hepatology Medisch Spectrum Twente Enschede The Netherlands
10. Department of Gastroenterology and Hepatology St. Antonius Hospital Nieuwegein The Netherlands
11. Department of Gastroenterology and Hepatology Netherlands Cancer Institute ‐ Antoni van Leeuwenhoek hospital Amsterdam The Netherlands