Reliability and validity of a brief questionnaire to assess television viewing and computer use by middle school children.
Schmitz KH; Harnack L; Fulton JE; Jacobs DR Jr.; Gao S; Lytle LA; Van Coevering P; Journal of School Health, 2004, vol. 74, issue 9, p 370, ISSN 00224391. ISBN 00224391.
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