1 Helsmley Electrophysiology Center, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
2 Department of Cardiology, Pacific Heart, Santa Monica, California, USA.
3 Department of Cardiology, Homolka Hospital, Prague, Czech Republic.
4 Helsmley Electrophysiology Center, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Cardiology, Homolka Hospital, Prague, Czech Republic. Electronic address: [email protected].