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Authors
Huo, Jin-Rong
Wang, Xiao-Xu
Li, Lu
Cheng, Hai-Xia
Su, Yan-Jing
Qian, Ping
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Article History
Received: 7 June 2016
Accepted: 28 September 2016
First Online: 19 October 2016
Competing interests
: The authors declare no competing financial interests.
