Zhou, Zi
Zhang, Wei
Fang, Ya
Article History
Received: 19 October 2021
Accepted: 28 March 2022
First Online: 7 April 2022
Declarations
:
: This is a secondary analysis using the publicly available The China Health and Retirement Longitudinal Study, which was a survey approved by the Ethical Review Committee of Beijing University, and all participants signed informed consent at the time of participation. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.