title: The electrocardiogram among professionals above the age of 50 without apparent cardiac disease.
authors.forename: J M
authors.initials: JM
authors.lastname: BARCELONA
mesh_terms: D000368:Aged / Q000473:pathology; D000369:Aged, 80 and over / Q000473:pathology; D004562:Electrocardiography; D006331:Heart Diseases; D006801:Humans
keywords: ELECTROCARDIOGRAPHY; OLD AGE/pathology