Received: 5 October 2022
Accepted: 4 January 2023
First Online: 14 January 2023
: This retrospective study was approved by the Institutional Review Board of Korea University Guro Hospital (IRB number: 20020GR0392). Informed consent was obtained from a parent and/or their legal guardian for study participation. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no conflict of interest.