1. Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
2. Division of Cardiology and Angiology, Heart Center University of Bochum, Georgstraße 11, 32545 Bad Oeynhausen, Germany
3. Department of Internal Medicine and Cardiology, MediClin Heart Centre Lahr, Hohbergweg 2, 77933 Lahr, Germany
4. Department of Cardiology, St. Josef-Hospital, Ruhr-Universität Bochum, 44791 Bochum, Germany
5. Department of Cardiology, Angiology and Pneumology, University Hospital Heidelberg, Im Neuenheimer Feld 672, 69120 Heidelberg, Germany