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Authors
Yamaguchi, Tsuyoshi http://orcid.org/0000-0002-5832-9381
Tani, Masaji
Kasama, Kazunori
Naitoh, Takeshi
Oshiro, Takashi
Inoue, Kentaro
Seki, Yosuke
Imoto, Hirofumi
Kaida, Sachiko
Matsubayashi, Jun http://orcid.org/0000-0003-4104-6833
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Funding
Funding for this research was provided by:
Japan Society for the Promotion of Science (JP17K10545)
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Article History
Received: 15 February 2022
Revised: 21 May 2022
Accepted: 25 May 2022
First Online: 13 June 2022
Declarations
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: The authors declare no competing interests.
: All procedures performed 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. The institutional ethical review board of each institution approved the study (approval number from the ethical review board of the principal institution: R2017-030). The need for written informed consent was waived because of the retrospective nature of the study. The opt-out method for obtaining patient consent was used at each institution.
