Cheng, Lulu
Wang, Siyu
Funding for this research was provided by:
Anhui Provincial Department of Education (KJ2021ZD0062)
Article History
Received: 9 June 2023
Accepted: 21 July 2023
First Online: 9 August 2023
Declarations
:
: The study was conducted in accordance with the Declaration of Helsinki and was approved by the Institutional Review Board of the National Centre for Health Statistics.
: Not applicable.
: The authors declare that they have no competing interests.