1. Department of Cardiology and Center for Cardiological Innovation, Oslo University Hospital, Rikshospitalet, Sognsvannsveien 20, Oslo, Norway
2. Institute for Clinical Medicine, University of Oslo, Oslo, Norway
3. Department of Cardiology, “Carol Davila” University of Medicine—Colentina University Hospital, Bucharest, Romania
4. Electrophysiology Section, Department of Cardiology, Cardiovascular Center, OLV Aalst, Aalst, Belgium
5. Department of Cardiology, Congenital Heart Disease and Electrotherapy, Silesian Medical University, Silesian Centre for Heart Diseases, Zabrze, Poland
6. Clinic of Heart Diseases, Vilnius University, Vilnius, Lithuania
7. Centre of Cardiology and Angiology, Vilnius University Hospital Santaros klinikos, Vilnius, Lithuania
8. Arrhythmia Section, Cardiology Department, University and Polytechnic Hospital La Fe, Valencia Spain
9. Division of Cardiology, Department of Medicine, Medical University of Graz, Auenbruggerplatz 15, Graz, Austria
10. Department of Electrophysiology, Heart Center Leipzig, Germany