Cui, Aiyong
Zhang, Jun
Deng, Hongli
Wei, Xing
Zhuang, Yan
Wang, Hu
Article History
Received: 14 March 2024
Accepted: 13 June 2024
First Online: 27 June 2024
Declarations
:
: The authors have no relevant financial or non-financial interests to disclose.
: The study was approved by the ethics review board of the National Center for Health Statistics.
: Written consent was obtained from each participant and their guardians.
: Not applicable.