1. Hannover Heart Rhythm Center, Department of Cardiology and Angiology, Hannover Medical School , Carl-Neuberg-Str. 1, 30625 Hannover , Germany
2. Cardiology Department, Centre Cardio-Pneumologique, CHU Pontchaillou , 35000 Rennes , France
3. Department of Cardiology, Ordensklinikum Linz Elisabethinen , 4020 Linz , Austria
4. Electrophysiology Unit, European Georges Pompidou Hospital , 20 rue Leblanc, 75015 Paris , France
5. Department of Internal Medicine, Faculty of Medical Sciences, University of Kragujevac , 34000 Kragujevac , Serbia
6. Department of Cardiology, St. George's Hospital NHS Foundation Trust, St. George's Hospital , London SW17 0QT , UK
7. Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet , 2100 Kopenhagen , Denmark
8. European Society of Cardiology, The European Heart House , Sophia Antipolis, 06410 Biot , France
9. Cardiology Department, Hospital Universitario La Paz, Idipaz, Universidad Autonoma , 28046 Madrid , Spain