1. Clinic III for Internal Medicine, Faculty of Medicine, University Hospital Cologne, University of Cologne, Kerpener Straße 62, 50937 Cologne, Germany
2. Faculty of Medicine, University Hospital Cologne, University of Cologne, 50937 Köln, Germany
3. Cardiology III—Angiology, Center of Cardiology, University Medical Center, Johannes Gutenberg-University, 55122 Mainz, Germany