Article History
Received: 26 May 2025
Accepted: 15 September 2025
First Online: 16 December 2025
Declarations
:
: This study was approved by the Institutional Review Board of Dalian Maritime University. Informed consent was obtained from all subjects involved in the study. The subjects are school children, and consent was also obtained from the school authorities and their legal guardians. All methods were carried out in accordance with relevant guidelines and regulations.
: The authors declare that there is no conflict of interest.