Zhang, Hongli
Jiang, Zeshun
Yan, Kangkang
Yu, Zhenfan
Sun, Jian
Li, Jiangping http://orcid.org/0000-0001-5183-3713
Funding for this research was provided by:
the research project of Ningxia Medical University (XT2019009)
Natural Science Foundation of Ningxia (2020AAC03166)
Article History
Received: 30 May 2021
Accepted: 20 September 2021
First Online: 26 September 2021
Declarations
:
: Data came from the public database of China Family Panel Studies (CFPS), funded by the 985 Program of Peking University and carried out by the Institute of Social Science Survey of Peking University. The original CFPS was approved by the Ethical Review Committee of Peking University, and all participants signed informed consent at the time of participation.
: Not applicable.
: The authors declare no competing interests.