1. Department of Gastroenterology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
2. Department of Gastroenterology, St Antonius Hospital, Nieuwegein, the Netherlands
3. Department of Gastroenterology, University Hospital Leuven, Leuven, Belgium
4. Department of Gastroenterology, Catharina Hospital, Eindhoven, the Netherlands
5. Department of Gastroenterology, Queens Medical Center, Nottingham, England
6. Department of Surgical Gastroenterology, Glasgow Royal Infirmary, Glasgow, Scotland
7. Medical Research Council, Cancer Unit, Addenbrookes Hospital, Cambridge, England
8. Department of Clinical Medicine and Gastroenterology, St James’s Hospital, Dublin, Ireland
9. Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
10. Department of Pathology, St Antonius Hospital, Nieuwegein, the Netherlands
11. Department of Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands