Ji, Hui http://orcid.org/0000-0002-1470-1794
Zhou, Yuxi
Cao, Shanren
Zhang, Junqiang
Ling, Xiufeng
Zhao, Chun
Shen, Rong http://orcid.org/0000-0002-5365-3246
Funding for this research was provided by:
National Natural Science Foundation of China (81871210, 81971386, 81771536, 81471457)
Natural Science Foundation of Jiangsu Province (BK20171126)
Article History
Received: 14 June 2020
Accepted: 30 October 2020
First Online: 10 November 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of Nanjing Maternity and Child Health Care Hospital (NJFY-2020KY-051).