1. Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University , Theodor-Kutzer-Ufer 1-3, 68167 Mannheim , Germany
2. Division of Cardiology and Angiology, Heart Center University of Bochum , Bad Oeynhausen , Germany
3. Department of Cardiology, St. Josef-Hospital, Ruhr-Universität Bochum , 44791 Bochum , Germany
4. Department of Cardiology, Faculty of Medicine, University Heart Center Freiburg-Bad Krozingen, University of Freiburg , Freiburg im Breisgau , Germany