title: Clinical usefulness of the first heart sound (with a new diagnostic finding).
mesh_terms: D000368:Aged; D001281:Atrial Fibrillation / Q000175:diagnosis; D005260:Female; D006326:Heart Auscultation; D006331:Heart Diseases / Q000175:diagnosis*; D006347:Heart Sounds; D006801:Humans; D008297:Male; D008946:Mitral Valve Stenosis / Q000175:diagnosis