Guo, Jiamei
Zheng, Anhai
He, Jinglan
Ai, Ming
Gan, Yao
Zhang, Qi
Chen, Lulu
Liang, Sisi
Yu, Xiaoyu
Kuang, Li
Article History
Received: 12 January 2021
Accepted: 29 August 2021
First Online: 26 October 2021
Declarations
:
: The study was approved by the ethics committee of the First Affiliated Hospital of Chongqing Medical University and written informed consent was signed by the pregnant women who agreed to participate.
: Not Applicable.
: The authors declare that they have no competing interests.