Sun, Ju
Kong, Xuying
Li, Haomiao
Chen, Jiangyun
Yao, Qiang
Li, Hanxuan
Zhou, Feng
Hu, Hua
Article History
Received: 10 December 2021
Accepted: 15 June 2022
First Online: 2 July 2022
Declarations
:
: All methods were carried out in accordance with relevant guidelines and regulations. The Biomedical Ethics Review Committee of Peking University approved CHARLS, and all participants were required to provide written informed consent. The ethical approval number was IRB00001052-11015.
: Not applicable.
: The authors report no potential conflicts of interest.