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Authors
Xia, Zhengqiang
Jing, Xu
He, Cheng
Wang, Xiaoge
Duan, Chunying https://orcid.org/0000-0001-8197-6686
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Article History
Received: 12 September 2017
Accepted: 1 November 2017
First Online: 13 November 2017
Competing Interests
: The authors declare that they have no competing interests.
