Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (18H02861, 18H02154)
Japan IDDM network
Takeda Science Foundation
Received: 14 July 2020
Accepted: 15 December 2020
First Online: 5 January 2021
Ethics approval and consent to participate
: Not applicable
: All authors agree with the content and the publication of this article.
: The authors declare no conflict of interest.