title: [Methodologic aspects of polyechocardiography].
mesh_terms: D000328:Adult; D003971:Diastole; D004452:Echocardiography / Q000379:methods*; D006334:Heart Function Tests / Q000379:methods; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D013599:Systole; D013997:Time Factors; D016276:Ventricular Function
vernacular_title: Metodicheskie aspekty ékhopolikardiografii.