Liu, Yuxin
Wang, Jia
Yan, Ziqi
Huang, Rui
Cao, Yan
Song, Hongxun
Feng, Da http://orcid.org/0000-0003-4392-760X
Funding for this research was provided by:
National Natural Science Foundation of China (71804052)
Article History
Received: 16 December 2020
Accepted: 6 October 2021
First Online: 19 October 2021
Declarations
:
: The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers): Ethics approval for the data collection in CHARLS was obtained from the Biomedical Committee (IRB) at Peking University (IRB00001052–11015).
: Not applicable.
: The authors declare that they have no competing interests.