Serial electrocardiograms: their reliability and prognostic validity during a 24-yr. period.
D000328:Adult; D001835:Body Weight; D003327:Coronary Disease / Q000175:diagnosis / Q000503:physiopathology; D004562:Electrocardiography; D005500:Follow-Up Studies; D006321:Heart / Q000502:physiology / Q000503:physiopathology; D006801:Humans; D008297:Male; D008433:Mathematics; D008875:Middle Aged; D011379:Prognosis; D014672:Vectorcardiography