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Validity of two physical activity questionnaires (IPAQ and PAQA) for Vietnamese adolescents in rural and urban areas

Carl K Lachat email, Roosmarijn Verstraeten email, Le Nguyen Bao Khanh email, Maria Hagströmer email, Nguyen Cong Khan email, Nguyen Do Anh Van email, Nguyen Quang Dung email and Patrick W Kolsteren email

International Journal of Behavioral Nutrition and Physical Activity 2008, 5:37doi:10.1186/1479-5868-5-37

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