Funding for this research was provided by:
JSPS KAKENHI (20K16845)
Received: 21 April 2020
Accepted: 15 September 2020
First Online: 22 September 2020
Ethics approval and consent to participate
: This study was performed in accordance with the Declaration of Helsinki and was approved by the Ethics Committee of Tohoku University Hospital (approval number: 17946). The patient’s parents provided written informed consent.
: Written informed consent was obtained from the parents for the publication of this case report.
: The authors have no conflicts of interest to disclose.