Peng, Zixuan
Zhu, Li
Article History
Received: 13 December 2020
Accepted: 12 May 2021
First Online: 29 May 2021
Declarations
:
: Not applicable. Data of this study was extracted from CHARLS, which is a publicly available survey in China. The study did not involve any individual-level data with personal identifiable information. The authors L.Z. and Z.P. confirm that statistical analyses were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors L.Z. and Z.P. declare that they have no conflict of interest.