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Authors
Lu, Ke
Hu, Ziyu
Ma, Jizhen
Ma, Houyi
Dai, Liming
Zhang, Jintao https://orcid.org/0000-0002-1029-3404
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Article History
Received: 22 February 2017
Accepted: 17 July 2017
First Online: 13 September 2017
Competing interests
: The authors declare no competing financial interests.
