1 Texas Cardiac Arrhythmia Institute, St David's Medical Center, Austin, Texas, USA.
2 Texas Cardiac Arrhythmia Institute, St David's Medical Center, Austin, Texas, USA; Heart Rhythm Management Centre, Brussels, Belgium.
3 Texas Cardiac Arrhythmia Institute, St David's Medical Center, Austin, Texas, USA; Department of Electrophysiology, Albert Einstein College of Medicine, New York, USA.
4 Texas Cardiac Arrhythmia Institute, St David's Medical Center, Austin, Texas, USA; Interventional Electrophysiology, Scripps Clinic, San Diego, California, USA; Metro Health Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA; Department of Biomedicine and Prevention, "Tor Vergata" University of Rome, Rome, Italy. Electronic address: [email protected].