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Authors
Wei, Hai-Bo
Feng, Zhuo
Yang, Ji-Yuan
Chen, Yu-Xuan
Shen, Jia-Jia
He, Xiao-Yuan
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Article History
Received: 11 January 2015
Accepted: 29 June 2015
First Online: 22 July 2015
Competing interests
: The authors declare no competing financial interests.
