Zhao, Sibo http://orcid.org/0000-0002-2828-5007
Peng, Li
Funding for this research was provided by:
Beijing Social Science Fund (19SRC013)
Article History
Received: 29 March 2021
Accepted: 18 June 2021
First Online: 12 July 2021
Declarations
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration. The study protocol was approved by the Ethics Committee of Central University of Finance and Economics. The written informed consents were obtained from all participants before they enrolled in this study.
: Not applicable.
: The authors have no conflict of interest to disclose.