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Authors
Furuhata, Ryogo
Matsumura, Noboru
Yoshiyama, Akira
Kamata, Yusaku
Takahashi, Masaaki
Morioka, Hideo
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Article History
Received: 30 April 2020
Accepted: 5 November 2020
First Online: 12 November 2020
Ethics approval and consent to participate
: This study was approved by the National Hospital Organization Tokyo Medical Center Independent Ethics Committee (No. R19–135). Due to the retrospective nature of the study, opt-out consent was performed for each patient on our hospital’s bulletin board and web site. Opt-out consent relies on implicit consent, where willingness to participate is tacit or presumed and can be retracted by active objection.
: Not Applicable.
: The authors declare that they have no competing interests.
