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Article History
Accepted: 6 September 2022
First Online: 8 October 2022
Declarations
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: The study was approved by the ethics committee of the First People’s Hospital of Zunyi (no. LL-2019–51). As this was a retrospective and non-interventional research study, the need for informed consent was waived.
: Not applicable.
: Not applicable.
: The authors declare no competing interests.
