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Test-retest reliability of selected items of Health Behaviour in School-aged Children (HBSC) survey questionnaire in Beijing, China

Yang Liu*, Mei Wang, Jorma Tynjälä, Yan Lv, Jari Villberg, Zhouyang Zhang and Lasse Kannas

BMC Medical Research Methodology 2010, 10:73 doi:10.1186/1471-2288-10-73

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