1. Department of Internal Medicine, Division of Cardiology, Angiology and Intensive Medical Care University Hospital Magdeburg, Otto von Guericke‐University Leipziger Str. 44 Magdeburg 39120 Germany
2. Department of Internal Medicine I, Division of Cardiology, Angiology, Pneumology and Intensive Medical Care University Hospital Jena, Friedrich‐Schiller‐University Jena Germany
3. Institute of Physiotherapy University Hospital Jena, Friedrich‐Schiller‐University Jena Germany
4. Clinic of Internal Medicine II, Department of Cardiology Paracelsus Medical University of Salzburg Salzburg Austria
5. Department of Internal Medicine III, Division of Endocrinology, Nephrology and Rheumatology Friedrich‐Schiller‐University Jena Germany