Huang, Huanhuan
Meng, Fanchao
Qi, Yanjie
Yan, Xiuping
Qi, Junhui
Wu, Yuanzhen
Lin, Yiwei
Chen, Xu
He, Fan
Funding for this research was provided by:
Beijing Hospital Management Center, Youth Talent Training Program (QML20231906)
Article History
Received: 1 December 2023
Accepted: 8 April 2024
First Online: 17 April 2024
Declarations
:
: The study protocols were approved by the National Center for Health Statistics Institutional Review Board. Written informed consent was obtained from each participant (Approval ID: Protocol #98-12; Protocol #2005-06; Protocol #2011-17; Protocol #2018-01). All methods were carried out following relevant guidelines and regulations or Declaration of Helsinki.
: Not applicable. There is no individual-level data in this study.
: The authors declare no competing interests.