Funding for this research was provided by:
Japan Society for the Promotion of Science (19K17218)
Received: 14 August 2021
Accepted: 10 January 2022
First Online: 24 January 2022
: Written informed consent was obtained from the patient’s legal guardian. This report was approved by the Institutional Review Board of the National Cancer Center Hospital (approval number 2017–091) according to the ethical standards laid down in the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no relevant competing interests.