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Authors
Nakai, Hirotsugu http://orcid.org/0000-0002-2080-5901
Shimizu, Hironori
Taniguchi, Takanori
Kawahara, Seiya
Yamaoka, Toshihide
Sasaki, Naoya
Isoda, Hiroyoshi
Nakamoto, Yuji
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Article History
Received: 29 April 2022
Accepted: 7 June 2022
First Online: 16 June 2022
Declarations
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: 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. Institutional review board (IRB) of each participating hospital approved this study. With approvals with IRB, the informed consent requirement was waived because of the retrospective nature of the study. Kyoto University Hospital (registration number, R3178), Tenri Hospital (registration number, 1245), Katsura Hospital (registration number, 793), Otsu Red Cross Hospital (registration number, 658).
: For this type of study consent for publication is not required.
: The authors declare that they have no conflict of interest.
