Funding for this research was provided by:
Project of Humanities and Social Sciences (20YJA190013)
national natural science foundation of china (32000773)
Article History
Accepted: 2 August 2021
First Online: 16 August 2021
Declarations
:
: The authors declare no competing interests.
: All procedures were approved by the ethics committee at the Shaanxi Normal University. Written informed consent was obtained from all participants included in the study.