1. Division of Gastroenterology and HepatologyDepartment of Internal Medicine IIIMedical University of ViennaViennaAustria
2. Department of Internal Medicine IIMedical University of InnsbruckInnsbruckAustria
3. Department of Internal Medicine IVWilhelminenspitalViennaAustria
4. Department of Internal Medicine IKlinikum Wels‐GrieskirchenWelsAustria
5. Department of SurgeryBarmherzige Schwestern LinzLinzAustria
6. Department of Internal MedicineBarmherzige Brüder St. Veit an der GlanAustria
7. Department of Internal Medicine IKlinikum Klagenfurt am WörtherseeAustria