Zhang, Zhuo
Shi, Guoshuai
Xing, Yuan
Men, Ke
Lei, Jing
Ma, Yonghong
Zhang, Yijia
Article History
Received: 26 April 2023
Revised: 20 August 2023
Accepted: 7 September 2023
First Online: 3 October 2023
Compliance with ethical standards
:
: The authors declare no competing interests.
: All procedures performed in studies involving human participants were in accordance with the Declaration of Helsinki. The original CHARLS was approved by the Ethical Review Committee of Peking University, and all the participants from CHARLS provided signed informed consent.