1. Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Heidelberg University, Mannheim, Germany
2. Department of Internal Medicine and Cardiology, Mediclin Heart Centre Lahr, Lahr, Germany
3. Gottsegen György National Cardiovascular Center, Budapest, Hungary
4. Division of Cardiology and Angiology, Heart Center University of Bochum – Bad Oeynhausen, Bad Oeynhausen, Germany
5. Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany