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Authors
Tokue, Hiroyuki https://orcid.org/0000-0002-1014-2833
Tokue, Azusa
Tsushima, Yoshito
Kameda, Takashi
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Article History
Received: 20 March 2020
Accepted: 29 May 2020
First Online: 12 June 2020
Compliance with Ethical Standards
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: The authors declare that they have no competing interests.
: Written informed consent was obtained from all patients and residents participating in the study, as approved by the ethics committee of our hospital.
: Written informed consent for publication was obtained from all patients and residents participating in the study.
