1. Division of Gastroenterology and Hepatology, Department of Internal Medicine III Medical University of Vienna Vienna Austria
2. Internal Medicine and Gastroenterology (IMuG), including Centralized Emergency Service (ZAE) Klinikum Klagenfurt am Wörthersee Klagenfurt Austria
3. Department of Internal Medicine I Klinikum Wels‐Grieskirchen Wels Austria