Wang, Cong
Hao, Yuanyuan http://orcid.org/0000-0002-4990-4380
Article History
Received: 8 November 2022
Accepted: 29 June 2023
First Online: 7 July 2023
Competing interests
: The authors declare no competing interests.
: This research was not required to receive any ethical approval because it did not involve human research participants and no primary data were collected. It uses data collected by the Questionnaire Statistics Organization.
: This article does not contain any studies with human participants performed by any of the author(s).