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Authors
Wang, Yi
Li, Yi
Pu, Weilin
Wen, Kathryn
Shugart, Yin Yao
Xiong, Momiao
Jin, Li
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Article History
Received: 2 March 2016
Accepted: 28 June 2016
First Online: 22 July 2016
Competing interests
: The authors declare no competing financial interests.
