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Authors
Lu, Chengliang
Hu, Ni
Yang, Ming
Xia, Shuangcheng
Wang, Haowen
Wang, Junfeng
Xia, Zhengcai
Liu, Jun-Ming
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Article History
Received: 7 November 2013
Accepted: 10 April 2014
First Online: 9 May 2014
Competing interests
: The authors declare no competing financial interests.
