Dan, Jiaxin http://orcid.org/0009-0004-5072-7424
Article History
Received: 28 April 2023
Accepted: 10 August 2023
First Online: 9 September 2023
Declarations
:
: The study was approved by the ethics committee of Chongqing Medical University (approval No. fhCMU dated 17 January 2023) and the gynecological society of China. The study follows the law of China and the v2008 Declaration of Helsinki. Informed consent of all subjects and/ or their legal guardian(s) waived by the ethics committee of the Chongqing Medical University (because of retrospective analysis).
: Not applicable.
: The authors declare no competing interests.