1. Department of Electrophysiology, University Heart Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany
2. Department of Internal Medicine, Evangelisches Krankenhaus, Duesseldorf, Germany
3. Philips Research, Patient Care Solutions, Eindhoven, Netherlands
4. Section for Rhythmology, Department of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University Duesseldorf, Duesseldorf, Germany
5. Department of Electrophysiology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
6. Department of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University Duesseldorf, Duesseldorf, Germany
7. Institute for Clinical Diabetology, German Diabetes Center and Leibniz Center for Diabetes Research at the Department of Metabolic Diseases, University Hospital Duesseldorf, Duesseldorf, Germany
8. Institute for Neural and Sensory Physiology, Heinrich Heine University Duesseldorf, Duesseldorf, Germany