Jiang, Dongdong
Liu, Xinliang
Chen, Yan
Hao, Jinwei
Huang, Hao
Huang, Qian
Chen, Qinghua
Wang, Quan
Li, Hao
Funding for this research was provided by:
Health and Family Planning Commission of Hubei Province (WJ2017Q003)
Article History
Received: 1 December 2021
Accepted: 14 March 2022
First Online: 31 March 2022
Declarations
:
: This study did not involve any animal and human experiments. The data come from the panel data of the Health Commission of Hubei Provincial. Therefore, ethic approval is not necessarily required in our study. This article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.