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Authors
Li, Yang
Lu, Qi
Wang, Yu
Ma, Shuangge
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Funding
Funding for this research was provided by:
MOE Project of Key Research Institute of Humanities and Social Sciences at Universities (16JJD910002)
National Natural Science Foundation of China (71771211)
National Natural Science Foundation of China (81774146)
fund for building world-class universities (disciplines) of Renmin University of China (0000)
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Article History
Received: 10 September 2019
Accepted: 26 March 2020
First Online: 6 April 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
