title: Alternating degrees of right bundle branch block.
authors.affiliation: Cardiology Division, University of Massachusetts Medical School, Worcester, MA 01655, USA.
authors.forename: David H
authors.initials: DH
authors.lastname: Spodick
mesh_terms: D000368:Aged; D002037:Bundle-Branch Block / Q000175:diagnosis*; D004562:Electrocardiography; D006801:Humans; D008297:Male