1. Department of Cardiology and Angiology; Märkische Kliniken GmbH; Klinikum Lüdenscheid; Witten/Herdecke University; Germany
2. Department of Cardiology and Angiology; Märkische Kliniken GmbH; Klinikum Lüdenscheid Germany
3. Department of Cardiovascular Medicine; Division of Electrophysiology; University of Münster; Münster Germany
4. University of Düsseldorf; Department of Cardiovascular Surgery; Düsseldorf Germany