First heart sound spectra in relation to anterior mitral-leaflet closing velocity.
D000293:Adolescent; D000328:Adult; D000368:Aged; D004452:Echocardiography; D005260:Female; D006326:Heart Auscultation; D006347:Heart Sounds; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000502:physiology*; D008955:Models, Cardiovascular; D010701:Phonocardiography