Updates are available Correction dated 2022-03-08
Click to view Correction: https://doi.org/10.1186/s12884-022-04489-2
-
Authors
Zhang, Yiqi
Lan, Xi
Li, Fei
Sun, Hong
Zhang, Ju
Li, Run
Gao, Yan
Dong, Hongli
Cai, Congjie
Zeng, Guo
- License Information
-
More Information
Article History
Received: 21 September 2021
Accepted: 5 January 2022
First Online: 17 January 2022
Change Date: 8 March 2022
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/s12884-022-04489-2
Declarations
:
: The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the Institutional Ethics Committee of Sichuan University (k2017037 on March 14, 2017). Informed consent was obtained from all subjects involved in the study.
: Not applicable
: The authors declare that they have no competing interests.
