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Article History

Received: 6 May 2023

Accepted: 15 June 2023

First Online: 5 July 2023

Declarations

:

: The authors declare that they have no competing interests.

: The retrospective study was approved by ethics committee of the Fourth Hospital of Hebei Medical University (no. 2020KY271). As patient consent to review their medical records was not required by the ethics committee, because the study is retrospective and does not involve patient privacy, the signed informed consent requirement was waved. This study was conducted in accordance with the declaration of Helsinki and patients’ data confidentiality.

: All participants signed a document of informed consent.