Funding for this research was provided by:
National Natural Science Foundation of China (82400489)
Hunan Provincial Natural Science Foundation of China (2025JJ60510)
Hunan Provincial Natural Science Foundation of China (2023JJ41019)
Article History
Received: 17 June 2025
Accepted: 25 November 2025
First Online: 2 December 2025
Declarations
:
: The study protocol was approved by the National Center for Health Statistics Ethics Review Committee. All individuals provided written informed consent before participating in the study.
: Not applicable.
: The authors have no conflicts of interest to declare.