title: Left bundle branch block--an elementary catechism.
authors.affiliation: University of Minnesota School of Medicine, Minneapolis.
authors.forename: H B
authors.initials: HB
authors.lastname: Burchell
mesh_terms: D002036:Bundle of His / Q000503:physiopathology; D002037:Bundle-Branch Block / Q000503:physiopathology*; D002312:Cardiomyopathy, Hypertrophic / Q000503:physiopathology; D004562:Electrocardiography; D006801:Humans; D009203:Myocardial Infarction / Q000503:physiopathology