1 Gastroenterology Unit, Department of Medicine, Azienda Ospedaliera Universitaria Integrata Policlinico GB Rossi, University of Verona, Verona 37134, Italy. Electronic address: [email protected].
2 First Department of Internal Medicine, Faculty of Medicine, Comenius University and University Hospital, Bratislava, Slovakia.
3 Department of Internal Medicine, Borthers of Mercy Hospital, Brno, Czech Republic.