1. Montefiore-Einstein Center for Heart and Vascular Care; Montefiore Medical Center, Albert Einstein College of Medicine; Bronx New York
2. Texas Cardiac Arrhythmia Institute at St. David's Medical Center; Austin Texas
3. Department of Biomedical Engineering; University of Texas; Austin Texas
4. Division of Cardiology; Stanford University; Palo Alto California
5. Case Western Reserve University; Cleveland Ohio
6. Scripps Clinic; San Diego California. Dell Medical School; Austin Texas
7. Department of Cardiology; University of Foggia; Foggia Italy