The application of the Minnesota code to population studies of the electrocardiogram in the elderly.
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000503:physiopathology; D006332:Cardiomegaly / Q000175:diagnosis* / Q000503:physiopathology; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D011159:Population Surveillance; D012606:Scotland