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Article History

Received: 29 October 2024

Accepted: 16 February 2025

First Online: 24 February 2025

Declarations

:

: This study was approved by the Ethics Committee of Kanagawa Children’s Medical Center (approval number: 145–2).

: Because of the retrospective nature of this study, the Ethics Committee of our institution determined that it was not necessary to obtain written informed consent for this study from the patients/guardians. The documents explaining the study and opt-out documents were available on the website of our institution. No patient offered to decline after the opt-out document was published. This study was conducted in accordance with consensus ethical principles from an appropriate version of the World Medical Association Declaration of Helsinki-Ethical Principles for Medical Research Involving Human Subjects.

: Not applicable.