[On the evaluation of the electrical activity of the heart in children].
D002648:Child; D004562:Electrocardiography; D006321:Heart / Q000502:physiology / Q000503:physiopathology*; D006801:Humans; D005082:Physical Exertion; D012213:Rheumatic Fever / Q000503:physiopathology*; D012214:Rheumatic Heart Disease / Q000503:physiopathology*
K otsenke élektricheskoĭ aktivnosti serdtsa u deteĭ.