Yang, Shengxiang
Chen, Qian
Wang, Lin
Article History
Received: 7 November 2023
Accepted: 19 February 2024
First Online: 27 February 2024
Declarations
:
: The requirement of ethical approval for this was waived by the Institutional Review Board of Maternal and Child Health and Family Planning Service Center of Xuzhou District Yibin City, because the data was accessed from NHANES (a publicly available database).
: The need for written informed consent was waived by the Institutional Review Board of Maternal and Child Health and Family Planning Service Center of Xuzhou District Yibin City due to retrospective nature of the study.
: The authors have no relevant financial or non-financial interests to disclose.