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Authors
Sun, Shanwen
Li, Xiao
Ren, Anjing
Du, Mulong
Du, Haina
Shu, Yongqian
Zhu, Lingjun
Wang, Wei
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Article History
Received: 28 June 2016
Accepted: 30 September 2016
First Online: 19 October 2016
Competing interests
: The authors declare no competing financial interests.
