Kajiwara, Kenta
Koga, Hiroshi http://orcid.org/0000-0001-9583-9842
Article History
Received: 21 March 2022
Revised: 1 June 2022
Accepted: 9 June 2022
First Online: 17 June 2022
Declarations
:
: This observational study has been approved by the ethics committee of the National Hospital Organization Beppu Medical Center. We confirm that we have read the journal’s position on issues involved in ethical publication and affirm that this report is consistent with those guidelines.
: Informed consent was obtained from the parents or the guardian of children.
: Not applicable.
: The authors declare no competing interests.