1. AFNET, Münster, Germany
2. Department of Cardiology, Asklepios Kliniken St Georg, Hamburg, Germany
3. Semmelweis University, Budapest, Hungary
4. Department of Cardiology, Electrophysiology, University Heart Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany
5. DZHK (German Centre for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Hamburg, Germany
6. Institute of Cardiovascular Sciences, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, IBR 136, Wolfson Drive, Birmingham, UK
7. Department of Clinical Research, University of Southern Denmark, and Odense University Hospital, Odense, Denmark
8. Department of Cardiology II—Electrophysiology, University Hospital Münster, Münster, Germany
9. Isala Diagram B.V. SMO Zwolle, Zwolle, Netherlands
10. University of Groningen, University Medical Center Groningen, Groningen, Netherlands
11. St. Vincenz Hospital Paderborn, Cardiology and Intensive Care Medicine, Paderborn, Germany
12. Garibaldi-Nesima Hospital, Catania, Italy
13. Universitätsspital Zürich, Zürich, Switzerland
14. Medical University Department, Kantonsspital Aarau, Aarau, Switzerland
15. University Hospital Antwerp, Antwerp, Belgium
16. Department of Neurology, University Hospital Würzburg, Würzburg, Germany
17. Institute for Clinical and Experimental Medicine (IKEM), Prague, Czech Republic
18. Hospital Clinic Barcelona, Barcelona, Spain
19. National Institute for Health Research Leicester Biomedical Research Centre, University of Leicester, Glenfield General Hospital, Leicester, UK
20. National Institute of Cardiology, Warsaw, Poland
21. Unit of Electrophysiology and Cardiac Pacing, Ospedale Dell'Angelo, Venice, Italy
22. Department of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
23. Sandwell and West Birmingham NHS Trust, Birmingham, UK