The QT interval in normal children and students.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D003201:Computers; D004562:Electrocardiography / Q000592:standards*; D005260:Female; D006331:Heart Diseases / Q000517:prevention & control; D006801:Humans; D007564:Japan; D008297:Male; D008403:Mass Screening