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Authors
Yu, Wenguang https://orcid.org/0000-0001-7022-6855
Guo, Peng
Wang, Qi
Guan, Guofeng
Huang, Yujuan
Yu, Xinliang
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Funding
Funding for this research was provided by:
the National Social Science Foundation of China (15BJY007)
the Taishan Scholars Program of Shandong Province (tsqn20161041)
the Humanities and Social Sciences Project of the Ministry Education of China (19YJA910002)
the Natural Science Foundation of Shandong Province (ZR2018MG002)
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Article History
Received: 10 June 2020
Accepted: 14 April 2021
First Online: 26 April 2021
Competing interests
: The authors declare that they have no competing interests.
