1. Department of Electrophysiology, Texas Cardiac Arrhythmia Institute, St David's Medical CenterAustin Texas
2. Department of Internal Medicine, Dell Medical SchoolAustin Texas
3. Department of Medicine (Cardiology), Albert Einstein College of Medicine, Montefiore HospitalNew York New York
4. Texas A & M College of MedicineBryan Texas
5. Interventional ElectrophysiologyScripps ClinicLa Jolla California
6. Department of Electrophysiology, Metro Health Medical Center, Case Western Reserve University School of MedicineCleveland Ohio
7. Department of Cardiology, Division of Cardiology, Stanford UniversityStanford California