title: Simple method of evaluating vectorcardiographic loops in children.
mesh_terms: D000293:Adolescent; D001024:Aortic Valve Stenosis / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D011666:Pulmonary Valve Stenosis / Q000175:diagnosis*; D014672:Vectorcardiography