Additional file 1.

Table S1. BMI-based criteria by age and sex for screening of overweight and obese school children proposed by Working Group on Obesity in China (WGOC) in 2005. Table S2 Multiple linear regression analyses for the associations between daily intake estimates (μg/day) and body mass index (BMI, Kg/m2) among study participants.

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Wang et al. Environmental Health 2012 11:79   doi:10.1186/1476-069X-11-79