Clinical conferences at The Johns Hopkins Hospital. Presbycardia.
D000328:Adult; D000368:Aged; D000375:Aging; D000818:Animals; D004285:Dogs; D006321:Heart / Q000502:physiology*; D006331:Heart Diseases / Q000175:diagnosis*; D006334:Heart Function Tests; D006801:Humans; D008297:Male; D009200:Myocardial Contraction; D005082:Physical Exertion; D051381:Rats; D013318:Stroke Volume; D013564:Sympathetic Nervous System / Q000502:physiology