Qi, Xiaofei
Chen, Daili
Li, Gehui
Cao, Jun
Yan, Yuting
Li, Zhenzhen
Qiu, Feilong
Huang, Xiaolei
Li, Yuantao
Article History
Received: 6 December 2021
Accepted: 17 February 2022
First Online: 28 February 2022
Declarations
:
: The study protocol was approved by the ethics committee of Shenzhen Maternity & Child Healthcare Hospital and registered online at China Clinical Registration Center (registration number, ChiCTR-ROC-17010532), all methods were carried out in accordance with relevant guidelines and regulations. Written informed consent was obtained from every study participant.
: Not applicable.
: The authors declare that they have no competing interests.