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Authors
Nakama, Rakuhei https://orcid.org/0000-0001-7877-5816
Yamamoto, Ryo
Izawa, Yoshimitsu
Tanimura, Keiichi
Mato, Takashi
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Article History
Received: 21 August 2020
Accepted: 24 November 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: The requirement for informed consent was waived due to the anonymous nature of the data. Study approval was obtained from the Institutional Review Board of Saiseikai Utsunomiya Hospital (No. 2017–16).
: Not applicable.
: The authors declare that they have no conflicts of interest<i>.</i>
