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Authors
Tasaka, Yuichi
Tanaka, Akihiro
Yasunaga, Daiki
Asakawa, Takashige
Araki, Hiroaki
Tanaka, Mamoru
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Article History
Received: 20 August 2018
Accepted: 7 November 2018
First Online: 13 December 2018
Ethics approval and consent to participate
: Approval by the Ethical Review Board of Ehime University Hospital was not required because this study did not involve any human or animal subjects.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
