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Authors
Kawada, Tomoyuki https://orcid.org/0000-0002-4426-4644
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Article History
Received: 28 February 2022
Accepted: 25 March 2022
First Online: 4 April 2022
Declarations
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: The author declares that he has no conflict of interest in this study.
: This study complies with the ethical standards of this journal, with respect to transparency, honesty, and original research. This study is “Letter to the Editor” and no patients are involved. Therefore, ethical approval is not necessary.
: As no patients were included in this study, informed consent was not necessary.
