Funding for this research was provided by:
National Natural Science Foundation of China (41722303)
Postdoctoral Science Foundation of Jiangsu Province (2018K147C)
Text and Data Mining valid from 2020-02-17
Received: 16 October 2019
Accepted: 13 February 2020
First Online: 17 February 2020
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: All authors have consented to publication.
: The authors declare that they have no competing interests.