Zhang, Xiao-Ming
Jiao, Jing
Cao, Jing
Wu, Xinjuan
Article History
Received: 26 June 2022
Accepted: 8 December 2022
First Online: 30 December 2022
Declarations
:
: The data were obtained from CLHLS, which was conducted according to the guidelines of the Declaration of Helsinki. The CLHLS study was approved by the Research Ethics Communities of two universities (Peking Union University and Duke University). All the participants provided written and informed consent. We have provided this information in our manuscript.
: Not applicable.
: There are no competing interests declared by the authors.