Li, Heng
Cao, Yu
Funding for this research was provided by:
the Fundamental Research Funds for the Central Universities (SWU1909753)
Social Science Foundation of Chongqing Municipality of China (2019BS020)
Article History
Accepted: 25 February 2021
First Online: 1 March 2021
Declarations
:
: Informed consent was obtained from all participants.
: The authors declared no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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