Funding for this research was provided by:
Japan Society for the Promotion of Science (JP19K17908)
Received: 21 July 2020
Accepted: 8 February 2021
First Online: 18 February 2021
Ethics approval and consent to participate
: The need for formal approval was waived.
: Informed consent was obtained from the patient’s guardian for publication of this case report.
: The authors declare that they have no competing interests.