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Authors
Zhu, Xuefeng
Li, Kun
Zhang, Peng
Zhu, Jie https://orcid.org/0000-0001-9432-2892
Zhang, Jintao
Tian, Chao
Liu, Shengchun
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Article History
Received: 8 December 2015
Accepted: 26 April 2016
First Online: 20 May 2016
Competing interests
: The authors declare no competing financial interests.
