1. Department of Internal Medicine II Division of Cardiology Paracelsus Medical University of Salzburg Salzburg Austria
2. Department of Cardiology Kepler University Hospital Medical Faculty Johannes Kepler University Linz Linz Austria
3. Paracelsus Medical University of Salzburg Linz Austria
4. Division of Cardiology, Pulmonology, and Vascular Medicine Medical Faculty University Duesseldorf Dusseldorf Germany
5. Department of Cardiology Clinic of Internal Medicine I Universitätsherzzentrum Thüringen Friedrich Schiller University Jena Jena Germany
6. Department of General and Interventional Cardiology and Rhythmology Helios Clinic Erfurt Germany