1. Division of Cardiology and Angiology, Heart Center University of Bochum, 32545 Bad Oeynhausen, Germany
2. Division of Cardiology, University Hospital Bern, 3010 Bern, Switzerland
3. Division of Interventional Cardiology, Gottsegen Gyorgy National Cardiovascular Center, 1096 Budapest, Hungary
4. First Department of Medicine, University Medical Centre Mannheim, Faculty of Medicine Manheim, University of Heidelberg, 67059 Heidelberg, Germany
5. Faculty of Medicine Göttingen, University of Göttingen, 37077 Göttingen, Germany
6. Division of Cardiology and Angiology II, University Heart Center Freiburg—Bad Krozingen, Faculty of Medicine of the University Freiburg, 79106 Freiburg, Germany
7. Clinic of Internal Medicine and Cardiology, Heart Center Lahr, 77933 Lahr, Germany