1. Department of Medicine III University Hospital RWTH Aachen Aachen Germany
2. Clinic for Gastroenterology, Hepatology and Infectious Diseases University Hospital Düsseldorf Medical Faculty of Heinrich Heine University Düsseldorf Düsseldorf Germany
3. Department of Diagnostic and Interventional Radiology University Hospital RWTH Aachen Aachen Germany
4. Department of Oncology, Hematology and Bone Marrow Transplantation with Section of Pneumology University Medical Centre Hamburg‐Eppendorf Hamburg Germany
5. Department of Hepatology and Gastroenterology Charité University Medicine Berlin Berlin Germany