Huang, Shichen
Li, Xiangguo
Li, Guangchun
Jin, Dayong
Funding for this research was provided by:
Natural Science Foundation of YanbianUniversity (2011-34)
Article History
Received: 26 July 2017
Accepted: 6 December 2017
First Online: 22 February 2018
Competing interests
: The authors declare that they have no competing interests.
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