1. Department of Gastroenterology and Hepatology Erasmus MC University Medical Centre Rotterdam The Netherlands
2. Department of Internal Medicine Reinier de Graaf Gasthuis Delft The Netherlands
3. Department of Surgery, Dentistry, Paediatrics and Gynaecology Unit of General and Pancreatic Surgery The Pancreas Institute Verona University of Verona Verona Italy
4. Policlinico Universitario Tor Vergata Gastroenterology Unit Rome Italy
5. Department of Gastroenterology Marmara University School of Medicine Istanbul Turkey
6. Marmara University Institute of Gastroenterology Istanbul Turkey
7. Department of Surgery Queen Elizabeth University Hospital Glasgow UK