He, Li
Biddle, Stuart J. H.
Lee, John Tayu
Duolikun, Nadila
Zhang, Lin
Wang, Zijie
Zhao, Yang http://orcid.org/0000-0002-6011-5948
Funding for this research was provided by:
National Natural Science Foundation of China (81602869)
Fundamental Research Funds for the Central Universities (3104221)
Article History
Received: 23 November 2020
Accepted: 2 June 2021
First Online: 10 June 2021
Declarations
:
: The Biomedical Ethics Review Committee of Peking University approved the China Health and Retirement Longitudinal study, and all interviewees were required to provide informed consent. The ethical approval number was IRB00001052–11015.
: Not applicable.
: The authors declare that they have no competing interests.