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Authors
Wu, Wenjun
Wang, Jiaxing
Zheng, Zhiwei
Hu, Yue
Jin, Jiayu
Zhang, Qiong
Hua, Jianli
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Article History
Received: 24 October 2014
Accepted: 28 January 2015
First Online: 26 February 2015
Competing interests
: The authors declare no competing financial interests.
