1. Department of Internal Medicine II; University Medical Center Regensburg; Regensburg Germany
2. Department of Cardiology and Pneumology; University Hospital, Georg-August University Goettingen, and DZHK (German Centre for Cardiovascular Research), partner site Goettingen; Goettingen Germany
3. Institute of Experimental Cardiovascular Research; University Medical Center Hamburg-Eppendorf; Hamburg Germany
4. Department of Thoracic, Cardiac and Vascular Surgery; University Hospital, Georg-August University Goettingen; Goettingen Germany
5. Department of Internal Medicine III, Molecular Cardiology and Angiology; University Medical Center, Schleswig-Holstein, Campus Kiel; Kiel Germany