[The U spike on the electrocardiograms of healthy children].
D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006331:Heart Diseases / Q000175:diagnosis*; D006801:Humans; D008297:Male
Zubets' U na elektrokardiogramakh zdorovykh diteĭ.