Chen, Tao
Li, Jia
Zhu, Yan
Lu, An-Wei
Zhou, Li
Wang, Jian-San
Zhang, Ying
Wang, Jun-Tao
Funding for this research was provided by:
Guiyang Health Bureau (2013035)
Article History
Received: 31 May 2022
Accepted: 19 September 2022
First Online: 26 October 2022
Declarations
: This manuscript conformed the Enhancing the QUAlity and Transparency Of health Research (EQUATOR) network guidelines.
: This study was approved by ethics committee of The Maternal and Child Health Care Hospital of Guiyang. This study was conducted in accordance with the declaration of Helsinki. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.