Hong, Ling
Chen, Aner
Chen, Jinliang
Li, Xiuxiu
Zhuang, Wenming
Shen, Yijing
Dai, Qiaohong
Zhang, Li
Article History
Received: 13 September 2021
Accepted: 27 January 2022
First Online: 5 February 2022
Declarations
:
: The Institutional Review Board of Ningbo Women and Children’s approved this study. The need for informed consent was waived by the Institutional Review Board of Ningbo Women and Children’s because of retrospective nature of this study. (EC2019–043). Research was conducted according to the ethical standard of Helsinki declaration and that data of patients were stored anonymized in a dedicated database. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable for this publication.
: We declare that we don’t have competing interests with publication of this article.