Funding for this research was provided by:
China Postdoctoral Innovative Talents Support Program (BX20180276)
National Natural Science Foundation of China (51635011)
National Natural Science Foundation of China (51727808)
Shanxi “1331 Project” Key Subjects Construction (1331 KSC)
Article History
Received: 24 July 2018
Accepted: 31 October 2018
First Online: 13 November 2018
Competing Interests
: The authors declare that they have no competing interests.
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