Li, Hongge
Mao, Yuchan
Jin, Jinglei
Article History
Received: 2 December 2020
Accepted: 8 April 2021
First Online: 10 May 2021
Declarations
:
: This study was approved by the Scientific Research Ethics Committee of Women’s Hospital, School of Medicine, Zhejiang University. This was a retrospective study of the clinical database with no intervention and no informed consent was required.
: The manuscript does not contain any individual person’s data.
: The authors declare that they have no competing interests.