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Authors
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (61772226)
National Natural Science Foundation of China (61373051)
National Natural Science Foundation of China (61502343)
Rongquan Wang (10183201835)
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Article History
Received: 20 December 2018
Accepted: 26 July 2019
First Online: 14 September 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.