Yu, Hongjun
Zhang, Heran
Funding for this research was provided by:
National Social Science Foundation of China (17CTY020, 17CTY020)
Article History
Received: 27 September 2022
Accepted: 13 February 2023
First Online: 17 February 2023
Declarations
:
: This study was approved by the Tsinghua University Institutional Review Board (IRB #2017DX02_1). Principals, teachers, and parents provided written informed consent to participate in the study. We confirm that all methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.