Long, Huibin
Cao, Ruiqi
Zhang, Hongrui
Qiu, Yudian
Yin, Heyong
Yu, Haomian
Ma, Lifeng
Diao, Naicheng
Yu, Fei
Guo, Ai
Funding for this research was provided by:
Beijing Postdoctoral Research Foundation (2021-ZZ-010)
Article History
Received: 23 December 2021
Accepted: 15 February 2022
First Online: 11 March 2022
Declarations
:
: CHARLS has been approved by the Ethical Review Committee of Peking University, and all participants signed informed consent at the time of participation. Therefore, no separate ethical approval was required for our study.
: Not applicable.
: None.