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Authors
Shimizu, Kanichiro
Enoki, Keitaro
Kameoka, Yoshihiko
Motohashi, Kenji
Yanagisawa, Takafumi
Miki, Jun
Baba, Akira
Sekiguchi, Huruki
Sadaoka, Shunichi
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Article History
Received: 20 December 2020
Accepted: 29 June 2021
First Online: 6 July 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: The requirement of informed consent was waived because of the retrospective study design.
: Approval was granted by our institutional review board. 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.
