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Authors
Bi, Yi
Jiang, Yunchun
Yang, Jiayan
Hong, Junchao
Li, Haidong
Yang, Bo
Xu, Zhe
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Article History
Received: 3 March 2016
Accepted: 1 November 2016
First Online: 13 December 2016
Competing interests
: The authors declare no competing financial interests.
