The relationship between unsupervised time after school and physical activity in adolescent girls

Berenice R Rushovich, Carolyn C Voorhees, CE Davis, Dianne Neumark-Sztainer, Karin A Pfeiffer, John P Elder, Scott Going, Vivian G Marino
International Journal of Behavioral Nutrition and Physical Activity 2006, 3:20 (31 July 2006)

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