Interpreting an electrocardiogram: Part I.
D000293:Adolescent; D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male