1. Department of Interventional Cardiology; Azienda Ospedaliera S. Camillo Forlanini; Rome Italy
2. Department of Pediatric Cardiology; Azienda Ospedaliero-Universitaria Policlinico; Ospedale Pediatrico Giovanni XXIII-Bari Italy
3. Rush Center for Congenital and Structural Heart Disease; Rush University Medical Center; Chicago Illinois