1. Department of Cardiology, Pulmonology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf, 40225 Düsseldorf, Germany
2. Cardiovascular Research Institute Düsseldorf (CARID), 40225 Düsseldorf, Germany
3. Department of Cardiology and Electrophysiology, St. Agnes-Hospital Bocholt, 46397 Bocholt, Germany