Shen, Zilong
Zhang, Zhengmei
Zhao, Wenjing
Article History
Received: 31 July 2022
Accepted: 16 December 2022
First Online: 31 December 2022
Declarations
:
: This study was reviewed and approved by the National Center for Health Statistics Research Ethics Review Board. Written informed consent was obtained from all participants for their participation in this study. The study protocol was performed in accordance with performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.