Zhang, Jing
Dong, Qi
Su, Xiaoxia
Long, Junshan
Funding for this research was provided by:
Hainan province Clinical Medical Center (QWYH202175)
Article History
Received: 6 April 2023
Accepted: 23 August 2023
First Online: 26 August 2023
Declarations
:
: The study protocol was approved by the Ethics Committee of Hainan Women and Children’s Medical Center (HNWCMC Tribunal No. [CitationRef removed], 2023). The requirement for informed consent was waived by the ethics committee of Hainan Women and Children’s Medical Center because of the retrospective nature of the study. All methods were conducted in accordance with relevant guidelines and regulations. All procedures were performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Not applicable.
: The authors declare no competing interests.