title: Left bundle branch block--significance of the spatial QRS axis (vector).
authors.affiliation: Medical Service/St Vincent Hospital, 123 Summer Street, Worcester, MA, 01608, USA. david.spodick@stvincenthospital.com
authors.forename: David H
authors.initials: DH
authors.lastname: Spodick
mesh_terms: D000369:Aged, 80 and over; D002037:Bundle-Branch Block / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D014672:Vectorcardiography / Q000295:instrumentation* / Q000379:methods