Yang, Rui
Zheng, Yan
Wang, Qingjun
Zhao, Liang
Funding for this research was provided by:
the Natural Science Foundation of Liaoning Province (2015020348)
Article History
Received: 13 March 2018
Accepted: 15 October 2018
First Online: 22 October 2018
Competing interests
: The authors declare that they have no competing interests.
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