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Authors
Chen, Gengxin
Wang, Dongxiao
Dong, Changming
Zu, Tingting
Xue, Huijie
Shu, Yeqiang
Chu, Xiaoqing
Qi, Yiquan
Chen, Hui
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Article History
Received: 5 June 2015
Accepted: 29 October 2015
First Online: 30 November 2015
Competing interests
: The authors declare no competing financial interests.
