Xiang, Xuesong
Zhang, Yunqiang
Hua, Keqin
Ding, Jingxin
Article History
Received: 24 January 2023
Accepted: 4 April 2023
First Online: 12 May 2023
Declarations
:
: All procedures presented in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and the later amendments or comparable ethical standards. This study was approved by the Institutional Ethics Review Board of Obstetrics and Gynecology Hospital, Fudan University.
: Written informed consent was obtained from the individual(s) for the publication of any potentially identifiable images or data included in this article.
: The authors declare no competing interests.