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Authors
Oya, Soichi https://orcid.org/0000-0002-0842-5092
Ikawa, Fusao
Ichihara, Nao
Wanibuchi, Masahiko
Akiyama, Yukinori
Nakatomi, Hirofumi
Mikuni, Nobuhiro
Narita, Yoshitaka
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Article History
Received: 2 April 2021
Accepted: 8 May 2021
First Online: 17 May 2021
Declarations
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: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript.
: The requirement for written consent from patients was waived by the ethical review boards because of the retrospective nature of the study design and use of anonymized data.
: All authors have approved the manuscript and agree with publication.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
