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Article History

Received: 31 May 2023

Accepted: 20 October 2023

First Online: 31 October 2023

Declarations

:

: The Ethics Committee of Beijing Children’s Hospital, affiliated to Capital Medical University, approved the study ([2023]-E-051-R). The requirement for individual consent was waived by the Ethics Committee of Beijing Children’s Hospital, affiliated to Capital Medical University, due to the retrospective nature of the study. I confirm that all methods were performed in accordance with the relevant guidelines. 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.