1. Faculty of Medicine, Department of Cardiology, Asklepios Clinic St. Georg, Semmelweis University Campus Hamburg, Lohmühlenstrasse 5, 20099 Hamburg, Germany
2. DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Luebeck, Berlin, Germany
3. Department of Cardiac Electrophysiology, Heart and Vascular Centre, University Hospital Hamburg Eppendorf, Hamburg, Germany
4. Department of Cardiology, Klinikum Nordfriesland—Klinikum Husum, Husum, Germany