1. Department of Electrophysiology, Heart Centre University Hospital Cologne , Germany
2. St. Joseph’s Heart Rhythm Centre, Rzeszów , Poland
3. Medical College, University of Rzeszów , Rzeszów , Poland
4. Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf , Hamburg , Germany
5. Department for Cardiovascular Diseases, University Hospital Centre Split , Spilt , Croatia
6. Division of Electrophysiology, Department of Internal Medicine and Cardiology, Heart Centre Dresden, University Hospital, Technische Universität Dresden , Dresden , Germany
7. Inselspital-Bern University Hospital, Department of Electrophysiology University of Bern , Bern , Switzerland
8. Division of Cardiology, Cardiocentro Ticino (CCT) , Lugano , Switzerland
9. Cardioangiologisches Centrum Bethanien, Agaplesion Markus Krankenhaus, Frankfurt am Main , Germany