title: Three kinds of block.
authors.affiliation: Cardiology Division, St. Vincent Hospital, University of Massachusetts Medical School, Worcester, MA 01608, USA.
authors.forename: D H
authors.initials: DH
authors.lastname: Spodick
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D004562:Electrocardiography; D006327:Heart Block / Q000503:physiopathology*; D006329:Heart Conduction System; D006333:Heart Failure / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D006973:Hypertension / Q000175:diagnosis / Q000503:physiopathology*; D008297:Male