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Validity and reliability of a physical activity questionnaire for Vietnamese adolescents

Tang K Hong*, Nguyen HHD Trang, Hidde P van der Ploeg, Louise L Hardy and Michael J Dibley

International Journal of Behavioral Nutrition and Physical Activity 2012, 9:93 doi:10.1186/1479-5868-9-93

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http://www.ijbnpa.org/content/9/1/93
1479-5868-9-93