[The short PR interval in childhood].
D001145:Arrhythmias, Cardiac; D053840:Brugada Syndrome; D000075224:Cardiac Conduction System Disease; D002648:Child; D004562:Electrocardiography; D006327:Heart Block; D006329:Heart Conduction System; D006801:Humans; D007223:Infant
ARRHYTHMIA/in infancy and childhood; ELECTROCARDIOGRAPHY/in infancy and childhood; HEART BLOCK/in infancy and childhood