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Article History

Received: 30 September 2023

Accepted: 26 April 2024

First Online: 22 May 2024

Declarations

:

: The studies involving human participants were reviewed and approved by the institutional review board of the Women’s and Children’s Hospital, Chongqing Medical University (Approval number: 2021-066). The informed consent is waived due to the retrospective nature by the ethics committee of the Women’s and Children’s Hospital, Chongqing Medical University. All procedures performed in studies involving human participants were conducted in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

: Not applicable.

: The authors declare no competing interests.