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Article
Physical activity levels among children aged 9-13 years - United States
August 01, 2003
Article
Physical activity levels among children aged 9-13 years - United States
August 01, 2003
Article
Physical activity levels among children aged 9-13 years— United States, 2002. (Report from the Centers for Disease Control and Prevention, Morbidity and Mortality Weekly Report, MMWR. 2003;52:785-788)
September 10, 2003