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Authors
Okamoto, Yuri https://orcid.org/0000-0002-0670-2164
Miyake, Yoshie
Nagasawa, Ichie
Yoshihara, Masaharu
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Article History
Received: 10 October 2017
Accepted: 15 May 2018
First Online: 24 May 2018
Ethics approval and consent to participate
: This study received approval from the Hiroshima University Medical Ethics Committee, Japan (No. 2167).
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
