Zhang, Yuanfeng
Guo, Xiangyan
Zhou, Xinye
Yang, Enguang
Li, Pan
Jiang, Jingqi
Zhang, Luyang
Zhang, Yonghai
Wang, Zhiping http://orcid.org/0000-0002-8140-591X
Article History
Received: 18 August 2023
Accepted: 13 September 2023
First Online: 22 September 2023
Declarations
:
: The authors have no competing interests to declare.
: All participants provided written informed consent and study procedures were approved by the National Center for Health Statistics Research Ethics Review Board (Continuation of Protocol #2005-06, Protocol #2011-17, Continuation of Protocol #2011-17).