Document is current

Article History

Received: 26 March 2025

Accepted: 7 July 2025

First Online: 6 August 2025

Declarations

:

: This study was approved by the ethics committee of Shijiazhuang Maternal and Child Health Hospital and in accordance with the Declaration of Helsinki. All participants signed an informed consent form prior to the start of the study, acknowledging their understanding of the study’s purpose, procedures, potential risks, and benefits.

: Not applicable.

: The authors declare no competing interests.