Department of Cardiology, Campus Virchow-Klinikum, Charité Medical School, Berlin, Germany. tarek.bekfani@med.uni-jena.de. Division of Cardiology, Angiology, Pneumology and Intensive Medical Care, Department of Internal Medicine I, University Hospital Jena, Friedrich-Schiller-University, Jena, Germany. tarek.bekfani@med.uni-jena.de. Department of Cardiology, University of Hull, Hull, UK. Department of Cardiology, Campus Virchow-Klinikum, Charité Medical School, Berlin, Germany. Department of Cardiology and Pneumology, University of Göttingen Medical Center, Göttingen, Germany. Department of Internal Medicine, Comenius University, Bratislava, Slovakia. Center for Stroke Research Berlin, Charité Medical School, Berlin, Germany. Department of Cardiology, Golnik University, Golnik, Slovenia. Division of Cardiology, Angiology, Pneumology and Intensive Medical Care, Department of Internal Medicine I, University Hospital Jena, Friedrich-Schiller-University, Jena, Germany. Division of Cardiology and Metabolism-Heart Failure, Cachexia and Sarcopenia, Department of Cardiology, Campus Virchow-Klinikum, Charité Medical School, Berlin, Germany. Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité Medical School Berlin, Berlin, Germany.