1 Pancreaticobiliary Medicine Unit, University College London Hospitals, London, UK; First Department of Pharmacology, Medical School, Aristotle University of Thessaloniki, Macedonia, Greece.
2 Gastroenterology and Hepatology, University of Utah Health, Salt Lake City, Utah, USA.
3 Department of Gastroenterology, General Hospital of Nea Ionia "Konstantopoulio-Patision", Athens, Greece; Department of Gastroenterology, Hepatopancreatology, and Digestive Oncology, Erasme University Hospital, Brussels, Belgium.