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Authors
Nitta, Koji https://orcid.org/0000-0001-5139-8539
Sugiyama, Kazuhisa
Wajima, Ryotaro
Tachibana, Gaku
Yamada, Yutaro
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Article History
Received: 28 January 2019
Revised: 23 May 2019
Accepted: 29 May 2019
First Online: 17 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from patients using the “opt-out” prior to the start of this study under approval from the ethics review board.
