Updates are available Correction dated 2022-05-19
Click to view Correction: https://doi.org/10.1186/s12913-022-08083-2
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Authors
Li, Yichen
Yang, Yong
Yuan, Jia
Huang, Lieyu
Ma, Yong
Shi, Xuefeng https://orcid.org/0000-0001-7056-2912
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Article History
Received: 14 November 2021
Accepted: 15 April 2022
First Online: 7 May 2022
Change Date: 19 May 2022
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/s12913-022-08083-2
Declarations
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: All methods were performed in accordance with the relevant guidelines and regulations. The study methods were carried out following the CHEERS guidelines for reporting observational studies.Since we used anonymized and de-identified data, and no interventions were involved, written consent was neither required nor possible. The Ethics Committee of Beijing University of Chinese medicine deemed this study as exempt from ethical approval (No.2019BZHYLL0201).
: Not Applicable.
: The authors declared that they have no competing interests.
