title: Quantitative spatial vector analysis of ventricular activation in left bundle branch block with special reference to left superior axis deviation.
mesh_terms: D002037:Bundle-Branch Block / Q000503:physiopathology*; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D014672:Vectorcardiography