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Authors
Jin, Xiao
Li, Qinghua
Li, Yue
Chen, Zihan
Wei, Tai-Huei
He, Xingdao
Sun, Weifu
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Article History
Received: 28 April 2014
Accepted: 18 July 2014
First Online: 7 August 2014
Competing interests
: The authors declare no competing financial interests.
