Hou, Chenxiao
Song, Shijing
Wang, Jingjing
Wu, Qingqing
Funding for this research was provided by:
Postdoctoral Science Foundation of Beijing Obstetrics and Gynecology Hospital attached to Capital Medical University (2022)
Article History
Received: 4 February 2024
Accepted: 25 March 2026
First Online: 6 April 2026
Declarations
:
: This study was approved by the Institutional Review Boards/Ethics Committees of Beijing Obstetrics and Gynecology Hospital (2019-KY-106-01). The study involved anonymised data collection from retrospective chart review only, for the purposes of evaluation and improvement of health services. This can be done without consent as per Health Privacy Principles and approved by the Ethics Committee.
: Not applicable.
: The authors declare no competing interests.