9Branscum P, Sharma M. After school based obesity preven tion interventions: a comprehensive review of the literature [J]. lnt J Environ Res Public Health, 2012, 9 (4): 1438- 1457.
10Levy ST,Rudn MC.Castellanos AC,et al. Effectiveness of a diet and physical activity promotion strategy on the prevewtion of obesity in Mexican school children[J]. BMC Public Health ,2012,12:152.