Xu, Bing
Li, Xiyuan
Du, Miaomiao
Zhou, Chao
Fang, Hezhi
Lyu, Jianxin http://orcid.org/0000-0003-4505-4507
Yang, Yanling
Article History
Received: 16 July 2016
Revised: 14 September 2016
Accepted: 14 September 2016
First Online: 20 October 2016
Competing interests
: The authors declare no conflict of interest.
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