1. From Division of Cardiology, McGill University Health Centre and Department of Medicine, McGill University, Montreal, QC, Canada (A.M.); The Department of Paediatrics, Hospital for Sick Children and the University of Toronto, ON, Canada (S.P.M.); Divisions of Cardiology and Critical Care Medicine, Ann & Robert H. Lurie Children’s Hospital of Chicago and Department of Pediatrics, Northwestern University Feinberg School of Medicine, IL (B.S.M.); Vanderbilt Memory & Alzheimer’s Center,...