Tian, Lifeng
Xia, Leizhen
Wu, Qiongfang
Article History
First Online: 8 October 2022
Declarations
:
: All procedures performed in studies involving human participants were by the ethical standards of the Institutional Review Board of the Jiangxi Provincial Maternal and Child Health Hospital and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
: Not applicable.
: All the authors declare that they have are no conflicts of interest.