1 Division of Cardiology, Department of Medicine, University of Alberta and Mazankowski Alberta Heart Institute, Edmonton, Alberta, Canada.
2 Fetal and Neonatal Cardiology, Division of Cardiology, Department of Pediatrics, University of Alberta and Stollery Children's Hospital, Edmonton, Alberta, Canada.
3 Division of Cardiology, Department of Medicine, University of Alberta and Mazankowski Alberta Heart Institute, Edmonton, Alberta, Canada. Electronic address: isabelle.vondermuhll@albertahealthservices.ca.