1. Antwerp University & University Hospital, Belgium
2. University of Leuven, Belgium
3. Erasmus Medical Centre, Rotterdam, The Netherlands
4. Mercy Heart and Vascular Institute, Mason City, USA
5. University Hospital of Rennes, France
6. University Hospital Puerta de Hierro Majadahonda, Madrid, Spain
7. University of Bern, Switzerland
8. University of Leipzig, Heart Centre, Germany
9. University of Southampton, UK
10. Oslo University Hospital Rikshospitalet, Norway
11. St Vincent's Hospital, Melbourne, Australia
12. Hospital Clínic, Universitat de Barcelona, Spain
13. Cliniques du Sud-Luxembourg, Arlon, Belgium
14. Cardiology – Arrhythmias Management Department, Clinique Pasteur, Toulouse, France
15. University Heart Centre, Zurich, Switzerland
16. Institute for Clinical and Experimental Medicine, Prague, Czech Republic
17. Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Israel
18. Cardiovascular Centre, OLV Hospital, Aalst, Belgium
19. Department of Electrocardiology, Medical University of Lodz, Poland
20. Heart Centre Munich-Bogenhausen, Munich Municipal Hospital Group, Germany
21. Cedars-Sinai Medical Center, Los Angeles, USA
22. Yale University, New Haven, USA