1. Pancreaticobiliary Unit, University College London Hospitals, London, UK
2. Hôpital Erasme – ULB, Cliniques Universitaires de Bruxelles, Brussels, Belgium
3. Gastroenterology Unit, Nuovo Regina Margherita Hospital, Rome, Italy
4. Department of Gastroenterology and Hepatology LUMC, Leiden University Medical Center, Leiden, The Netherlands
5. Klinikum Augsburg, Augsburg, Germany
6. Serviço de Gastrenterologia, Instituto Português de Oncologia, Porto, Portugal