1. Pediatric Arrhythmia Service, Division of Pediatric Cardiology, Department of Pediatrics; The Children's Hospital at Montefiore, Albert Einstein College of Medicine; Bronx New York
2. Pediatric Cardiology, Pediatric Electrophysiology, Department of Pediatrics, Lucille Packard Children's Hospital; Stanford University, Palo Alto; California
3. Department of Family and Social Medicine and Department of Epidemiology and Population Health; Albert Einstein College of Medicine; Bronx New York