Updates are available Correction dated 2021-12-02
Click to view Correction: https://doi.org/10.1186/s12913-021-07305-3
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Authors
Ma, Chao
Huo, Shutong
Chen, Hao
- License Information
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More Information
Article History
Received: 17 February 2021
Accepted: 16 September 2021
First Online: 5 October 2021
Change Date: 2 December 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/s12913-021-07305-3
Declarations
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: Not applicable - All analyses are based on publicly available data from national surveys.
: Not applicable.
: The author declares that he has no competing interests.
