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Authors
Huang, Liang http://orcid.org/0000-0002-9607-7939
Jin, Hong
Zhang, Hong
Liu, Yang
Shi, Xinxing
Kang, Xintong
Zeng, Yilan
Wang, Lin
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Funding
Funding for this research was provided by:
Chengdu Municipal Health Commission
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Article History
Received: 25 April 2021
Accepted: 13 May 2022
First Online: 26 May 2022
Declarations
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: Ethical approval for this study was obtained from the Ethics Committee of the Chengdu Public Health Clinical Center, and it was complied with the ethical guidelines of the Declaration of Helsinki 2008. The requirement for informed consent was waived because of the retrospective nature of the study and the data were anonymous.
: Not applicable.
: The authors have no competing interests to declare.
