title: Quantitative Frank vectorcardiograms of normal children and a comparison to those of patients with atrial defects.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006321:Heart / Q000502:physiology*; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006801:Humans; D013223:Statistics as Topic; D014672:Vectorcardiography