title: A classic but uncommon principle.
authors.affiliation: Department of Medicine, Division of Cardiology at London Health Science Centre, London, Ontario, Canada.
authors.forename: Emoke
authors.initials: E
authors.lastname: Posan
authors.forename: Lorne J
authors.initials: LJ
authors.lastname: Gula
authors.forename: Allan C
authors.initials: AC
authors.lastname: Skanes
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Krahn
authors.forename: Raymond
authors.initials: R
authors.lastname: Yee
authors.forename: George J
authors.initials: GJ
authors.lastname: Klein
mesh_terms: D001283:Atrioventricular Node / Q000503:physiopathology; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013615:Tachycardia, Sinoatrial Nodal Reentry / Q000175:diagnosis* / Q000503:physiopathology