1. Department of Nephrology Ruhr‐University of Bochum University Hospital Marien Hospital Herne Herne Germany
2. Department of Cardiology Brandenburg Medical School Theodor Fontane University Hospital Brandenburg Brandenburg Germany
3. Second Propedeutic Department of Medicine Hippokration Hospital Aristotle University of Thessaloniki Thessaloniki Greece
4. Department of Cardiology Ruhr‐University of Bochum University Hospital Marien Hospital Herne Herne Germany