[Clinical significance of heart systole phase characteristics in middle-aged and elderly persons].
D000328:Adult; D000368:Aged; D000375:Aging; D006321:Heart / Q000502:physiology*; D006326:Heart Auscultation; D006801:Humans; D008875:Middle Aged
Klinicheskoe anachenie osobennosteĭ faz sistoly serdtsa u pozhilykh i starykh liudeĭ.