Huang, Lihui
Cai, Min
Li, Li
Zhang, Xin
Xu, Yang
Xiao, Jianhua
Huang, Qian
Luo, Guijuan
Zeng, Zhaoyang
Jin, Cuiyuan
Jin, Yuanxiang
He, Jun
Yang, Weitao
Article History
Received: 14 April 2021
Accepted: 23 September 2021
First Online: 4 October 2021
Declarations
:
: The study was approved by Research Ethics Committee of Changsha Hospital for Maternal and Child Health Care (NO: 2020005). Each participant provided written informed consent before any study procedure. All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.