Evaluation of a program to prevent head and spinal cord injuries: a comparison between middle school and high school.
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D000293:Adolescent; D002648:Child; D005260:Female; D016489:Head Injuries, Closed / Q000517:prevention & control*; D006266:Health Education / Q000379:methods*; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D012307:Risk Factors; D013119:Spinal Cord Injuries / Q000517:prevention & control*