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Authors
Ishii, Takeo https://orcid.org/0000-0002-5960-260X
Hagiwara, Yasuhiro
Matsuyama, Yutaka
Wakui, Hiromichi
Tamura, Kouichi
Arimura, Yoshihiro
Yoshimura, Ashio
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Article History
Received: 9 December 2025
Accepted: 9 April 2026
First Online: 3 June 2026
Declarations
Ethics approval and consent to participate: This study protocol was reviewed and approved by the Institutional Review Board of Yokohama City University (approval number B200700018) and the Local Ethics Committee of Zenjinkai Group (approval number 0001116288). Informed consent was obtained through an opt-out method on the website of the Zenjinkai Group ( ) according to the ethical guidelines for medical and health research involving human subjects in Japan. All procedures were carried out in accordance with the ethical standards of the institutional committees and with the 1964 Declaration of Helsinki and its later amendments.
Consent for publication: Not applicable.
Competing interests: The authors declare no competing interests.
