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Authors
Wu, Jianli
Pu, Yue
Li, Juan
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Funding
Funding for this research was provided by:
National Social Science Fund General Project (19BJL131)
Ministry of Education the base project (17JJD790024)
Ministry of Education's "Innovation Team Development Plan" (IRT_17R52)
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Article History
Received: 14 December 2019
Accepted: 13 April 2020
First Online: 3 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
