Funding for this research was provided by:
National Natural Science Foundation of China (32071071)
the Ministry of Education Humanities and Social Science Research Project (18YJA190003)
Article History
Received: 4 August 2023
Accepted: 16 August 2023
First Online: 2 September 2023
Compliance with Ethical Standards
:
: The authors declare no competing interests.
: This study was conducted in accordance with the ethical principles for research involving human participants, and approval of the investigation protocols was obtained from the Institutional Review Board of the authors’ affiliated institution (No. 202004010035), the local educational departments, and the principals of each school.
: Children and their parents gave written informed consent for the investigation.