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Authors
Hata, Hironobu https://orcid.org/0000-0002-0077-7026
Imamachi, Kenji https://orcid.org/0000-0003-1090-3660
Yoshikawa, Kazuhito
Kamaguchi, Mayumi https://orcid.org/0000-0003-4055-9047
Osanai, Toshihisa https://orcid.org/0000-0003-0220-0535
Matsuzaka, Masashi https://orcid.org/0000-0002-8199-3037
Watanabe, Kenichi
Tomioka, Nobumoto
Harabayashi, Toru https://orcid.org/0000-0002-5839-2954
Fujimoto, Katsuya
Oizumi, Satoshi
Ueda, Michihiro https://orcid.org/0009-0006-6080-3413
Hiraga, Hiroaki https://orcid.org/0000-0003-1825-1070
Miyamoto, Ikuya https://orcid.org/0000-0003-4642-8611
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Funding
Funding for this research was provided by:
Japan Society for the Promotion of Science (JSPS) KAKENHI (JP22K10137)
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Article History
Received: 14 September 2025
Accepted: 12 January 2026
First Online: 14 January 2026
Declarations
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: All procedures performed on human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This single-center, retrospective, observational study protocol and patient information were approved by the Hokkaido Cancer Center Hospital Ethics Review Board (clinical study number 03–63), and informed consent was waived by this board because of the retrospective design of the study.
: Not applicable.
: The authors declare no competing interests.
