1. Department of General and Interventional Cardiology, Hamburg University Heart Center, Hamburg, Germany;
2. Department of Cardiology and Division of Emergency Medicine, Campus Virchow Klinikum and Campus Charité Mitte, Charité Universitätsmedizin Berlin, Germany;
3. Department of Internal Medicine I, Cardiology/Angiology, Giessen University, Giessen, Germany;
4. Department of Medical Clinic II, Cardiology, University of Lübeck, Lübeck, Germany