1. Ahmanson/UCLA Adult Congenital Heart Disease Center David Geffen School of Medicine Los Angeles California USA
2. UCLA Cardiac Arrhythmia Center David Geffen School of Medicine Los Angeles California USA
3. Department of Pediatrics, David Geffen School of Medicine University of California, Los Angeles (UCLA) Los Angeles California USA
4. Department of Radiological Sciences, Thoracic and Diagnostic Cardiovascular Imaging David Geffen School of Medicine, UCLA Los Angeles California USA