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Authors
Gao, Zhong-Zheng
Lin, Rui-Lian
Bai, Dong
Tao, Zhu
Liu, Jing-Xin
Xiao, Xin
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Article History
Received: 29 November 2016
Accepted: 13 February 2017
First Online: 16 March 2017
Competing interests
: The authors declare no competing financial interests.
