title: Physiologic differences in rate-related versus exercise-induced left bundle branch block.
authors.affiliation: Department of Medicine, University of Massachusetts Medical School, Worcester.
authors.forename: H
authors.initials: H
authors.lastname: Koito
authors.forename: D H
authors.initials: DH
authors.lastname: Spodick
mesh_terms: D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000209:etiology / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D011446:Prospective Studies