1. Colentina University Hospital, University of Medicine ‘Carol Davila’, Cardiology Dpt, 37 Dionisie Lupu str, Bucharest, Romania
2. Division of Cardiology, Department of Medicine, Medical University of Graz, Auenbruggerplatz 15, Graz 8036, Austria
3. Arrhythmology Department, Paul Stradins Clinical University Hospital, Riga Stradins University, Riga, Latvia
4. II Department of Heart Arrhythmia, National Institute of Cardiology, Alpejska 42, Warsaw 04-628, Poland
5. Department of Cardiology, Cardiovascular Center, Electrophysiology Section, OLV Aalst, Belgium
6. Cardiology Department, Fondazione Cardiocentro Ticino, Lugano, Switzerland
7. Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Silesian Center for Heart Diseases, Zabrze, Poland
8. Heart and Lung Department, Klinikum Fürth, Fürth, Germany
9. School of Medicine, University of Belgrade, Cardiology Clinic, Clinical Center of Serbia Visegradska 26, Belgrade 11000, Serbia