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Authors
Jia, Yingli
Sun, Yi
Weng, Lin
Li, Yingjie
Zhang, Quanbin
Zhou, Hong
Yang, Baoxue
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Article History
Received: 5 April 2016
Accepted: 27 July 2016
First Online: 22 August 2016
Competing interests
: The authors declare no competing financial interests.
