1. Department of Gastroenterology University of Liverpool Royal Liverpool University Hospital Liverpool UK
2. Department of Gastroenterology and Hepatology National Liver Institute, Menoufia University Shebine Elkom Egypt
3. Department of Surgery, Dentistry, Paediatrics and Gynaecology Unit of General and Pancreatic Surgery The Pancreas Institute Verona University of Verona Verona Italy
4. General Surgery Unit IRCCS Sacro Cuore Don Calabria Hospital Negrar di Valpolicella Verona Italy
5. Division Gastroenterology‐Hepatology Maastricht University Medical Center+ Maastricht The Netherlands