1. Department of Gastroenterology, Imelda General Hospital, Bonheiden, Belgium
2. Department of Gastroenterology and Hepatology, University Hospitals Leuven, Belgium
3. Imelda Clinical GI Research Center, Bonheiden, Belgium
4. Department of Gastroenterology and Hepatology, Gent University Hospital, Belgium
5. Department of Hepatology and Gastroenterology, St. Jan Hospital, Bruges, Belgium
6. Clinique Universitaires Saint-Luc, Brussels, Belgium