Funding for this research was provided by:
Japan Society for the Promotion of Science (JP15H06281, JP19K18143)
Received: 15 April 2021
Accepted: 5 September 2021
First Online: 16 September 2021
: This study was approved by the hospital's ethics committee, and written informed consent was obtained from all patients about the use of surgical samples and their clinical data.
: Not applicable.
: The authors declare that they have no competing interests.