Funding for this research was provided by:
Public Trust Foundation of Marumo ER Medicine & Research Institute
Japan Society for the Promotion of Science (JP18K16524)
Received: 11 December 2020
Accepted: 17 February 2021
First Online: 4 March 2021
: This study was approved by the institutional review board of St. Marianna University School of Medicine (IRB: 3022). Informed consent from the patients was waived because this study contains de-identified information, which does not affect the rights and welfare of the patients.
: Not applicable
: The authors declare that they have no competing interests.