Liu, Kan
Chen, Yixuan
Tong, Jianing
Yin, Aiqi
Wu, Linlin
Niu, Jianmin
Article History
Received: 26 July 2021
Accepted: 16 May 2022
First Online: 1 June 2022
Declarations
:
: BiCoS was approved by the ethics committee of Shenzhen Maternity & Child Healthcare Hospital of Southern Medical University, Guangdong, China (Approval number: Shenzhen Maternal and Child Ethics Review [2017] No. 23). All participants had written consent before recruit in this study. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: All authors report no conflict of interest.