Funding for this research was provided by:
Japan Society for the promotion of Science (20K17464)
Kawano Masanori Memorial Public Interest Incorporated Foundation for Promotion of Pediatrics (2020)
Received: 11 January 2021
Accepted: 24 May 2021
First Online: 5 June 2021
: This case series was approved by the Institutional Review Board of Nagoya University Hospital (no. 9069).
: Written informed consent was obtained from the guardians of both patients.
: The authors declare no competing interests.