Li, Yiqun
Jiang, Minglan
Ren, Xiao
Han, Longyang
Zheng, Xiaowei
Wu, Wenyan
Article History
Received: 7 November 2023
Accepted: 21 February 2024
First Online: 4 March 2024
Declarations
:
: The original CHARLS was approved by the Ethical Review Committee of Peking University (IRB00001052–11015), and all participants signed the informed consent at the time of participation. This research followed the guidance of the Declaration of Helsinki.
: Not applicable.
: The authors declare no competing interests.