title: Importance of defining left bundle branch block.
authors.forename: David G
authors.initials: DG
authors.lastname: Strauss
mesh_terms: D002037:Bundle-Branch Block / Q000175:diagnosis* / Q000503:physiopathology*; D004562:Electrocardiography / Q000592:standards*; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans