1. Department of Cardiology, Kaçkar State Hospital, Rize, Turkey
2. Department of Cardiology, Queen’s University, Kingston, ON K7L 3N6, Canada
3. Second Department of Cardiology, Laboratory of Cardiac Electrophysiology, Evangelismos General Hospital of Athens, Athens, Greece
4. Division of Cardiac Electrophysiology, Madinah Cardiac Centre, Medina, Saudi Arabia