[Significance of some components of phonocardiography in the diagnosis of cardiac changes in children].
D002675:Child, Preschool; D006801:Humans; D010701:Phonocardiography; D012214:Rheumatic Heart Disease / Q000175:diagnosis* / Q000503:physiopathology
Znachenie nekotorykh komponentov fonokardiogrammy v diagnostike izmeneniĭ v serdtse u deteĭ.