Yu, Kun
Wang, Zhen
Huang, Youhuang
Funding for this research was provided by:
National Natural Science Foundation of China (71101148, 71702184)
Article History
Received: 18 March 2018
Accepted: 7 September 2018
First Online: 19 September 2018
Competing interests
: The authors declare that they have no competing interests.
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