Funding for this research was provided by:
Ministry of Health, Labour and Welfare (H23-Jyunkankitou (seishuu)-ippan-0001)
Japan Society for the Promotion of Science (JP18K10085)
Article History
Received: 14 September 2020
Accepted: 4 November 2020
First Online: 27 November 2020
Ethics approval and consent to participate
: The protocols were approved by the Institutional Review Board of Yamaguchi University Hospital (H25-87 and H30-114), and the Ethics Committee of the University of Tokyo, Faculty of Medicine (10005). The subjects gave assent, and their guardians gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.