Xie, Lulu
Liang, Zhijiang
Wang, Xionghu
Luo, Xianqiong
Article History
Received: 29 November 2023
Accepted: 19 April 2024
First Online: 26 April 2024
Declarations
:
: All methods were carried out in accordance with relevant guidelines and regulations. This study was approved by the ethics committee of Guangdong Women and Children Hospital, Guangdong, China. The need for informed consent was waived by the ethics committee review board of Guangdong Women and Children Hospital, because only routine birth data in the birth registry system were used and the patients/the public were not involved in the design, conduct, reporting, or dissemination plans of our research. All data were anonymized.
: Not applicable.
: Patients and/or the public were not involved in the design, conduct, reporting or dissemination plans of this research. Patient consent for publication Not required.
: The authors declare no competing interests.