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Authors
Chen, Jin https://orcid.org/0000-0002-3707-7779
Guan, Sheng
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (61701344)
Tianjin Higher Education Creative Team Funds Program in China (Not applicable)
Tianjin Normal University Doctoral Foundation (52XB1603, 52XB1713)
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Article History
Received: 11 September 2019
Accepted: 14 July 2020
First Online: 28 July 2020
Competing interests
: The authors declare that they have no competing interests.
