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Authors
Zha, Zhengyu
Han, Xiao-Ran
Smith, Matthew D
Lei, Qun-Ying
Guan, Kun-Liang
Xiong, Yue
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Article History
Received: 24 November 2015
Accepted: 8 February 2016
First Online: 26 April 2016
Competing interests
: The authors declare no conflict of interest.
