title: First, remove the offending agent.
authors.forename: April J
authors.initials: AJ
authors.lastname: Kam
authors.forename: Alex F
authors.initials: AF
authors.lastname: Manini
authors.forename: Lewis S
authors.initials: LS
authors.lastname: Nelson
mesh_terms: D017147:Defibrillators, Implantable / Q000009:adverse effects*; D006801:Humans; D008133:Long QT Syndrome / Q000139:chemically induced*; D008691:Methadone / Q000009:adverse effects*
chemical_list: D008691:Methadone