title: Case 1: An infant with a low heart rate.
authors.affiliation: McMaster University.
authors.forename: Dustin
authors.initials: D
authors.lastname: Jacobson
authors.affiliation: Pediatric Cardiology, McMaster Children's Hospital, Hamilton, Ontario.
authors.forename: Dragos
authors.initials: D
authors.lastname: Predescu
authors.affiliation: Pediatric Cardiology, McMaster Children's Hospital, Hamilton, Ontario.
authors.forename: Tapas
authors.initials: T
authors.lastname: Mondal