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Authors
Chen, Shao-bin
Yang, Xi-hong
Weng, Hong-rui
Liu, Di-tian
Li, Hua
Chen, Yu-ping
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Article History
Received: 7 February 2017
Accepted: 2 May 2017
First Online: 12 June 2017
Competing Interests
: The authors declare that they have no competing interests.
