[Auscultation-phonocardiographic comparative studies on functional systolic sounds of the cardiac apex].
D006326:Heart Auscultation; D006801:Humans; D010701:Phonocardiography
Auskul'tativno-fonokardiograficheskie paralleli pri funktsional'nykh sistolicheskikh shumakh u verkhushki serdtsa.