1. Gill Heart Institute; University of Kentucky; Lexington Kentucky USA
2. Service de Cardiologie; CHU Henri Mondor; Creteil France
3. Texas Cardiac Arrhythmia Institute; St. David's Medical Center; Austin TX USA
4. Department of Cardiology; University of Foggia; Foggia Italy
5. Department of Biomedical Engineering; University of Texas; Austin TX USA
6. Dell Medical School; University of Texas; Austin TX USA