title: [Functional evaluation of the left portion of the heart by a method of calibrated differentiated apex cardiography. I. Introduction and methodological principles].
mesh_terms: D006321:Heart / Q000502:physiology*; D006801:Humans; D007702:Kinetocardiography / Q000295:instrumentation / Q000379:methods*; D009200:Myocardial Contraction; D009626:Terminology as Topic
vernacular_title: Otsenka funktsii levogo otdela serdtsa metodom kalibrovannoĭ i differentsirovannoĭ apeks-kardiografii. Soobshchenie I. Vvedenie i metodicheskie osnovy.