1. Department of Cardiology Yeditepe University Hospital Istanbul Turkey
2. Department of Cardiology Istanbul‐Cerrahpasa University Hospital Istanbul Turkey
3. Department of Cardiology Medical University of South Carolina Mt Pleasant South Carolina USA
4. Department of Cardiology Arrhythmia Institute at Grandview Birmingham Alabama USA
5. Department of Cardiology Ankara City Hospital Ankara Turkey
6. Department of Cardiology Kansas City Heart Rhythm Institute and Research Foundation Kansas City Missouri USA