1. Department of Cardiology, St. Marienhospital Vechta, Marienstr. 6-8, 49377 Vechta, Germany
2. Department of Cardiology II—Electrophysiology, University Hospital Münster, 48149 Münster, Germany
3. Department of Neurology, University Hospital Münster, 48149 Münster, Germany
4. Department of Medicine, Witten/Herdecke University, 58455 Witten, Germany
5. Department of Internal Medicine/Cardiology, Marienhospital Osnabrück, 49074 Osnabrück, Germany