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Authors
Sano, Akihiko http://orcid.org/0000-0002-9531-5157
Sohda, Makoto
Nakazawa, Nobuhiro
Ubukata, Yasunari
Kuriyama, Kengo
Kimura, Akiharu
Kogure, Norimichi
Hosaka, Hisashi
Naganuma, Atsushi
Sekiguchi, Masanori
Saito, Kana
Ogata, Kyoichi
Sakai, Makoto
Ogawa, Hiroomi
Shirabe, Ken
Saeki, Hiroshi
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Article History
Received: 10 October 2021
Accepted: 15 December 2021
First Online: 3 January 2022
Declarations
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: Our study was carried out according to the relevant guidelines and regulations of the institutional and/or national research committee and the 1964 Helsinki declaration. The study protocol was approved by the Institutional Review Board (IRB) of Gunma University Hospital (approval number HS2018–237), Gunma Prefectural Cancer Center, National Hospital Organization Takasaki General Medical Center, Isesaki Municipal Hospital, and Japan Community Healthcare Organization Gunma Central Hospital. Because this study was strictly retrospective and involving the collection of existing data and records, the requirement to obtain informed consent was waived by the IRB of the Gunma University Hospital. And the opt-out method was used to obtain participant’s consent.
: Not applicable.
: The authors declare that they have no competing interests.
