Yin, Yan
Zhang, Yumin
Qian, Cheng
Funding for this research was provided by:
Medical Health Science and Technology Project of Zhejiang Province (2018KY790)
Article History
Received: 30 June 2022
Accepted: 1 March 2023
First Online: 11 March 2023
Declarations
:
: This work has been carried out in accordance with the Declaration of Helsinki (2000) of the World Medical Association. This study was approved by the Ethics Committee of Huzhou Maternity & Child Health Care Hospital (2022-J-058). As a retrospective study, the requirement for informed consent was waived by the Ethics Committee of Huzhou Maternity & Child Health Care Hospital.
: Not applicable.
: The authors declare that they have no competing interests.