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Authors
Wang, Yanhui https://orcid.org/0000-0001-5219-4124
Qi, Wenping
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Funding
Funding for this research was provided by:
Research project of Academy for Multidisciplinary Studies, Capital Normal University (19530012017)
Young Yanjing Scholar Project of Capital Normal University (2055122)
National Natural Science Foundation of China (41771157)
the Great Wall Scholars Program (CIT&TCD20190328)
Key Research Projects of National Statistical Science of China (2018LZ27)
Key Technologies Research and Development Program (2018YFB0505400)
Beijing Municipal Commission of Education (KM201810028014)
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Article History
Received: 14 November 2019
Accepted: 29 October 2020
First Online: 27 February 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
