Chen, Lu
Feng, Penghui
Shaver, Lance
Wang, Zengwu
Funding for this research was provided by:
the national key r&d program of china during the thirteen five-year plan period (2018YFC1315303)
the construction of first-class discipline of epidemiology and health statistics in fuwai hospital (2019E-XK09-1)
Article History
Received: 3 September 2020
Accepted: 27 July 2021
First Online: 11 August 2021
Declarations
:
: Not applicable.
: Not applicable.
: The authors declared that they have no competing interest.