1 Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht University, The Netherlands.
2 Department of Gastroenterology and Hepatology, St Antonius Hospital, Nieuwegein, The Netherlands.
3 Department of Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique-Hôpitaux de Paris and University of Paris, Paris, France.
4 Department of Gastroenterology, Amsterdam University Medical Centers, University of Amsterdam, The Netherlands.
5 Digestive Endoscopy Unit, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy.
6 Department of Gastroenterology, Hôpital Nord, Marseille, France.
7 Department of Gastroenterology, Dudley Group NHS Foundation Trust and Birmingham City University, Birmingham, UK.
8 Endoscopy Unit, University Hospital La Fe, Valencia, Spain.
9 Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium.
10 Department of Medicine I, University Medical Center Mainz, Mainz, Germany.
11 Department of Gastroenterology, University Hospital Zurich, Zurich, Switzerland.
12 Division of Gastroenterology, Montréal University Hospital (CHUM), Montréal, Canada.
13 Department of Surgery, Oncology and Gastroenterology, DiSCOG, University of Padua, Padua, Italy.
14 Department of Gastroenterology, University College London Hospital, London, UK.
15 Department of Gastroenterology, University Hospitals Leuven, Leuven, Belgium.
16 Department of Gastroenterology, University Clinic for Visceral Surgery and Medicine, Bern University Hospital, Bern, Switzerland.
17 Department of Hepatogastroenterology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.