Funding for this research was provided by:
Japan Society for the Promotion of Science (JP 18K07034)
Article History
Received: 19 March 2021
Accepted: 5 July 2021
First Online: 31 July 2021
Declarations
:
: This study was approved by the local ethics committee of the JCHO Saitama Medical Center [Approval number: No. 15–11 (July 9, 2015)]. Consent to participate was waived because this study was a retrospective observational study using archival cases difficult to be newly contacted, thus the committee approved the waiver.
: Not applicable.
: None declared.