Lin, Li-hua
Weng, Yi-lin
Lin, Ying-ying
Huang, Xiu-xian
Lin, Yang
Xiu, Xiao yan
Yan, Jian-ying http://orcid.org/0000-0001-7087-6356
Lin, Juan
Funding for this research was provided by:
Shaanxi Health and Family Planning Commission (2019-WJ-04)
Fujian Science and Technology Project (2018Y0005)
Fujian Maternity and Child Health Hospital Science and Technology Innovation Startup Fundation (YCXZ 18-19)
Article History
Received: 9 November 2020
Accepted: 10 February 2022
First Online: 19 February 2022
Declarations
:
: This study was approved by the ethics committee of the Fujian Maternity and Child Health Hospital(NO.2020KY104). All of the data were obtained from patient records and the study was conducted in accordance with the guidelines of the Declaration of Helsinki. Permission to access the medical records was granted by the Fujian Provincial Maternity and Children’s Hospital Database steering committee. Informed consent was not required, as this is a retrospective observational study.
: Not applicable
: The authors declare that they have no competing interests.