Zhang, Xingxing
Zhou, Peng
Zhang, Xiangling
Xu, Jie
Shang, Sushuang
Article History
Received: 3 July 2025
Accepted: 21 October 2025
First Online: 18 November 2025
Declarations
:
: This research received approval from the National Center for Health Statistics Research Ethics Review Board, and participants signed informed consent forms (Protocol#2018–01,#2011–17,#2005–06,). The procedures used in this study in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare no competing interests.