Fan, Xiao-Feng
Xie, Hong
Shuai, Wen-Huan
Zhong, Gui-You
Article History
Received: 20 March 2025
Accepted: 7 July 2025
First Online: 7 August 2025
Declarations
:
: This research involving human participants was reviewed and approved by the Institutional Review Board of the CDC’s National Center for Health Statistics. Written informed consent was obtained from all participants, and the study adhered to the principles outlined in the Helsinki Declaration. As this study involved secondary data analysis, additional ethical approval was not necessary.
: Not applicable.
: The authors declare no competing interests.