Received: 9 May 2023
Accepted: 30 June 2023
First Online: 10 July 2023
: This study was approved by the ethics review board of research ethics committee of Ryukyu University. The study procedures were conducted in accordance with the tenets of the Declaration of Helsinki. Informed consent was obtained from parents, patient anonymity was preserved, and personal information was protected.
: Consent for publication was obtained from all the parents. The datasets generated and/or analyzed in the current study are not publicly available because of privacy and ethical concerns.
: The authors have no conflicts of interest to report.