title: Cycle length and QRS alternation during a narrow QRS tachycardia.
authors.affiliation: Department of Cardiology, University Hospital Maastricht, The Netherlands. C.Timmermans@cardio.azm.nl
authors.forename: C
authors.initials: C
authors.lastname: Timmermans
authors.forename: L M
authors.initials: LM
authors.lastname: Rodriguez
authors.forename: J L
authors.initials: JL
authors.lastname: Smeets
mesh_terms: D000328:Adult; D004562:Electrocardiography; D006801:Humans; D008297:Male; D013610:Tachycardia / Q000503:physiopathology*