1 Department of Internal Medicine, Second Medical Clinic, Ippokration Hospital, Aristotle University of Thessaloniki, 54642, Thessaloniki, Macedonia, Greece. jannis@auth.gr.
2 Department of Internal Medicine, Second Medical Clinic, Ippokration Hospital, Aristotle University of Thessaloniki, 54642, Thessaloniki, Macedonia, Greece.
3 First Department of Pharmacology, Aristotle University of Thessaloniki, 54642, Thessaloniki, Macedonia, Greece.
4 Pancreaticobiliary Medicine Unit, University College London Hospitals (UCLH), London, UK.
5 Department of Gastroenterology and Hepatology, University of Zurich, 8091, Zurich, Switzerland.