title: Letter by Jackson et al Regarding, "PR Interval Identifies Clinical Response in Patients With Non-Left Bundle Branch Block: A Multicenter Automatic Defibrillator Implantation Trial-Cardiac Resynchronization Therapy Substudy" by Kutyifa et al.
authors.affiliation: Cardiology Department, Toronto General Hospital, Toronto, Ontario, Canada.
authors.forename: Nicholas
authors.initials: N
authors.lastname: Jackson
authors.affiliation: Cardiology Department, Toronto General Hospital, Toronto, Ontario, Canada.
authors.forename: Andreu
authors.initials: A
authors.lastname: Porta-Sanchez
authors.affiliation: Cardiology Department, Toronto General Hospital, Toronto, Ontario, Canada.
authors.forename: Andrew C T
authors.initials: AC
authors.lastname: Ha
mesh_terms: D002037:Bundle-Branch Block / Q000628:therapy*; D058406:Cardiac Resynchronization Therapy; D058409:Cardiac Resynchronization Therapy Devices; D017147:Defibrillators, Implantable; D004554:Electric Countershock / Q000295:instrumentation*; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male