1 Division of Cardiology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
2 Pediatric and Congenital Cardiac Surgery Unit, Department of Cardiac, Thoracic and Vascular Sciences and Public Health, University of Padua, Padua, Italy.
3 Department of Pediatric and Congenital Cardiology, M3C National Reference Centre, Bordeaux University Hospital, Bordeaux, France.