Electrocardiogram of nonagenarians.
D000368:Aged; D000375:Aging; D001145:Arrhythmias, Cardiac / Q000401:mortality; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006327:Heart Block / Q000401:mortality; D006331:Heart Diseases / Q000401:mortality* / Q000503:physiopathology; D006801:Humans; D008136:Longevity; D008297:Male