title: [Changes in QT intervals--study on pupils of schools for the deaf using Holter ECG].
mesh_terms: D000293:Adolescent; D000328:Adult; D002675:Child, Preschool; D002940:Circadian Rhythm; D003638:Deafness / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic