1. Department of Electrophysiology, Heart Centre Leipzig and Leipzig Heart Institute , Strümpellstrasse 39, 04289 Leipzig , Germany
2. Erasmus University Medical Center, ‘s-Gravendijkwal 230, 3015 GD Rotterdam, The Netherlands
3. Chaim Sheba Medical Center, 52621 Tel Hashomer , Israel
4. Arrhythmia Unit, Heart Diseases Institute, Bellvitge Biomedical Research Institute (IDIBELL), Bellvitge University Hospital, Feixa Llarga, 08907 L'Hospitalet , Barcelona , Spain
5. Sherbrooke University Hospitals (CHUS) , 3001 12e Avenue Nord, J1H 5N4 Sherbrooke, Quebec , Canada
6. Department of Cardiology, Friedrich-Alexander-Universität Erlangen-Nuremberg , Ulmenweg 18, 91054 Erlangen , Germany
7. Zentralklinik Bad Berka GmbH, Robert-Koch-Allee 9, 99437 Bad Berka , Germany
8. Semmelweis Medical University , Városmajorutca 68, 1122 Budapest , Hungary
9. Montreal Heart Institute affiliated with Université de Montréal , 5000, rue Belanger, H1T 1C8 Montréal, Québec , Canada
10. St. Marien-Hospital GmbH , Altstadtstraße 23, 44534 Lünen , Germany
11. Azienda Ospedaliera Pugliese Ciaccio , Via Vinicio Cortese 25, 88100 Catanzaro , Italia
12. Hôpital Haut Lévêque (CHU) , 1 avenue de Magellan, 33600 Pessac Cedex , France
13. Maria Heimsuchung—Caritas-Klinik Pankow, Breite Str. 46/47, 13187 Berlin , Germany
14. Department of Cardiology, School of Medical Sciences, Faculty of Medicine and Health, Örebro University , SE-701 82 Örebro , Sweden
15. Department of Medical Science and Cardiology, Uppsala University , S-751 85 Uppsala , Sweden
16. Satakunta Central Hospital , Sydänyksikkö, Sairaalantie 3, 28500 Pori , Finland
17. General Hospital of Northern Theater Command , No. 83 Wenhua Road, Shenhe District, 110016 Shenyang , China
18. Department of Experimental, Diagnostic and Specialty Medicine, Institute of Cardiology, University of Bologna , Via Massarenti 9, 40138 Bologna , Italia
19. Department of Electrocardiology, Medical University of Lodz , Ul. Pomorska 251, 92-213 Łódź , Poland
20. Russells Hall Hospital , Pensett Road, DY1 2HQ Dudley , UK
21. Arcispedale Santa Maria Nuova , Viale Risorgimento 80, 42123 Reggio Emilia , Italia
22. Biotronik SE & Co. KG, Woermannkehre 1, 12359 Berlin , Germany