1. Department of Cardiology and Angiology, Hannover Medical School , Carl-Neuberg-Str. 1, 30625 Hannover , Germany
2. Heart Center Bremen, Electrophysiology Bremen , Senator-Wessling-Str. 1, 28277 Bremen , Germany
3. Heart Center Leipzig, University of Leipzig , Leipzig , Germany
4. Department of Cardiology, CVI of Central Florida , Ocala, FL , USA
5. Department of Cardiology, Trinity Medical, WNY , Buffalo, NY , USA
6. Department of Cardiology, Asklepios Harzklinik Goslar , Goslar , Germany
7. Department of Cardiology, Jackson Heart Clinic , Jackson, MS , USA
8. Department of Cardiology, Katholisches Klinikum Luenen , Luenen , Germany
9. Department of Cardiology, Sanford Cardiovascular Institute , Sioux Falls, SD , USA
10. Department of Cardiology, HCA Florida Heart Institute , St. Petersburg, FL , USA
11. Department of Internal Medicine II, University Hospital Regensburg , Regensburg , Germany