Zhang, Lihai
Jia, Xiaodong
Zhang, Zhipeng
Yu, Tong
Geng, Zhangyan
Yuan, Lindong
Funding for this research was provided by:
2021 Annual Science and Technology Development Plan of Shandong Geriatric Society (LKJGG2021W070)
Scientific Research Fund Project of Hebei Provincial Health Commission (20231071)
Article History
Accepted: 31 October 2023
First Online: 10 November 2023
Declarations
:
: The study was reviewed and approved by the National Center for Health Statistics Ethics Review Board (Approval Number: 20220611). All authors have their consent to participate.
: All authors have their consent to publish their work.
: The authors declare no competing interests.