1 Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada.
2 Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada; Neurosciences and Mental Health, SickKids Research Institute, Toronto, Ontario, Canada.
3 Pediatric Cardiology, Department of Cardiac Science, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
4 Division of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada. Electronic address: [email protected].