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Chang-hui Xiong, Yan Yan*, Zhen Liao, Shi-hui Peng, Hai-rong Wen, Yan-xia Zhang, Shu-hua Chen, Jian Li, Hai-ying Chen, Xiao-wu Feng, Hui-qing Yao, Li Huang and Li Zhang
Corresponding author: Yan Yan email@example.com
BMC Public Health 2014, 14:111
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