1. Department of Medicine II, Hematology and Oncology University Hospital Schleswig‐Holstein, Christian‐Albrechts‐University Kiel Germany
2. Department of Medicine III, Cardiology University Hospital Schleswig‐Holstein, Christian‐Albrechts‐University Kiel Germany
3. Department of Nephrology and Hypertension University Hospital Schleswig‐Holstein, Christian‐Albrechts‐University Kiel Germany