[On the frequency characteristics of heart sounds in healthy persons].
D000293:Adolescent; D000328:Adult; D005260:Female; D006321:Heart / Q000502:physiology; D006326:Heart Auscultation; D006801:Humans; D008297:Male; D008722:Methods
O chastotnoĭ kharakteristike tonov serdtsa zdorovogo cheloveka.