Received: 17 August 2021
Accepted: 17 November 2021
First Online: 4 December 2021
: The present study was approved by the Research Ethics Committee of Corporate Hospital Group, Hitachi, Ltd. (2020-38). Written consent for participate was obtained from all participants.
: Not applicable.
: Dr. Sonoo reports an executive salary from TXP Medical Inc. as a CEO. In addition, TXP Medical accepts several competitive research grants including AI Hospital Research grant from the Japan Cabinet Office. These are outside of the submitted work. Other authors declare that they have no competing interests.