Wu, Jing
Su, Jiali
Wang, Yangyang
Chen, Jianfeng
Shang, Yuanyuan
Li, Jing
Article History
Received: 16 April 2022
Accepted: 22 June 2022
First Online: 4 July 2022
Declarations
:
: This study was approved by the Institutional Review Board of the National Center for Health Statistics. All participants gave their written informed consent. All authors declared that all methods in this study were carried out in accordance with relevant guidelines and regulations.
: The authors consent the publication.
: The authors declare that there is no competing interests.