Yuan, Huiqing
Zhang, Cui
Maung, Ei Ni Tar
Fan, Songli
Shi, Zijia
Liao, Fang
Wang, Shuo
Jin, Ying
Chen, Le
Wang, Li
Article History
Received: 20 January 2022
Accepted: 30 August 2022
First Online: 22 November 2022
Declarations
:
: This study was approved by the ethics committee of Hebei Women and Children’s Health Center. The written informed consent was obtained from all participants. In addition, all methods were performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interest.