Jiang, Wen
Xie, Wanqin
Ni, Bin
Zhou, Haiyan
Liu, Zhiyu
Li, Xingli
Funding for this research was provided by:
Major Scientific and Technological Projects for Collaborative Prevention and Control of Birth Defects in Hunan Province (2019SK1012)
Scientific and Technological Department Projects in Hunan Province (2017SK50802)
Major Research and Development Projects in Hunan Province (2018SK2060)
Article History
Received: 2 August 2021
Accepted: 28 September 2021
First Online: 15 October 2021
Declarations
:
: The study was reviewed and approved by the Medical Ethics Committee of Maternal and Child Health Care Hospital of Hunan Province. Written informed consent was not required.
: Not applicable.
: The authors declare that they have no competing interests.