Ueki, Satoshi
Suzuki, Yuji
Kiyokawa, Megumi
Hanyu, Takako
Fukuchi, Takeo
Article History
Received: 7 July 2021
Accepted: 28 September 2021
First Online: 9 October 2021
Declarations
:
: The retrospective study was approved by the Institutional Review Board/Ethics Committee at Niigata University (Registration No. 2020-0270) and followed the tenets of the Declaration of Helsinki. Informed consent was obtained using the opt-out method because of the study’s retrospective nature. None of the parents or the guardians of the included patients signed and returned the opt out form.
: Not applicable.
: There are no competing interest to declare.