1. Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Hugstetter Str. 55, Freiburg, Germany
2. Faculty of Medicine, University of Freiburg, Freiburg, Germany
3. Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, HX Maastricht, The Netherlands
4. Asklepios Medical Center Altona, Department of Cardiology, Arrhythmia Unit, Hamburg, Germany
5. Hartcentrum Hasselt, Jessa Ziekenhuis Hasselt, Hasselt, Belgium
6. Department of Surgical and Interventional Arrhythmology, Kuprianov's Cardiovascular Surgery Clinic, Military Medical Academy, St. Petersburg, Russia
7. Rhythmology Division, Department of Medicine, GZO Regional Health Center, Wetzikon, Switzerland
8. Cardioimmunology, Center for Molecular Cardiology, University of Zurich, Zurich-Schlieren, Switzerland
9. Heart Center, University of Leipzig, Leipzig, Germany
10. Massachusetts General Hospital, Harvard University, Boston, MA, USA
11. National Heart & Lung Institute, Imperial College London, London, UK
12. Arrhythmia Unit, Cardiology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain
13. Fundacion Jimenez Diaz - Quiron Salud, Madrid, Spain
14. Department of Cardiology, Radboud University Medical Center, GA Nijmegen, The Netherlands
15. Department of Cardiology, Leiden University Medical Center, ZA Leiden, The Netherlands
16. Department of Cardiology, Electrophysiology Unit, Hacettepe University, Ankara, Turkey