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Authors
Ishioka, Mitsuaki
Hirasawa, Toshiaki
Mishima, Yuko
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Article History
Received: 18 May 2020
Revised: 13 January 2021
Accepted: 14 January 2021
First Online: 24 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. This study was approved by the ethics committee of the Institutional Review Board (no. 2018-1077).
: The requirement for informed consent from each patient was waived.
