Article History
Received: 29 July 2021
Accepted: 4 November 2021
First Online: 18 November 2021
Declarations
:
: Makoto Nakamura has no conflict of interest; Kazuyoshi Kanno has no conflict of interest; Masahiko Nishioka has no conflict of interest.
: Ethical approval for the study was obtained from the Ethics Committee and Institutional Review Board Committee of Okinawa Prefectural Nanbu Medical Center & Children’s Medical Center (R2-108).
: The requirement of written informed consent was waived because of the retrospective design of the study.