Article History
Received: 11 November 2021
Accepted: 15 May 2022
First Online: 8 June 2022
Declarations
:
: The authors declare no conflicts of interest and received no financial support for the preparation of this article for publication.
: This study was approved by the local institutional review board for the Conduct of Human Research of all collaborating hospitals. It was approved by the ethics committee of Keio University of Medicine (approval number: 20090087). The need for informed consent was waived because anonymized data were used.