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Authors
Chang, Xingmao
Fan, Jiayun
Wang, Min
Wang, Zhaolong
Peng, Haonan
He, Gang
Fang, Yu
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Article History
Received: 10 May 2016
Accepted: 14 July 2016
First Online: 8 August 2016
Competing interests
: The authors declare no competing financial interests.
