Wang, Yao
Yi, Xiaoyan
Li, Qifu
Zhang, Jun
Wang, Zhihong
Funding for this research was provided by:
the Natural Science Foundation of Chongqing (CSTC2012jjA10040)
the General Program of Chongqing Municipal Health Bureau (2011-2-062)
the Tackling Project of Science and Technology of Chongqing Committee of Science and Technology (CSTC2012ggyyjs10038)