Higaki, Yuji http://orcid.org/0000-0002-1032-4661
Kobayashi, Motoyasu
Hirai, Tomoyasu
Takahara, Atsushi http://orcid.org/0000-0002-0584-1525
Article History
Received: 10 July 2017
Revised: 11 August 2017
Accepted: 14 August 2017
First Online: 11 October 2017
Competing interests
: The authors declare no conflict of interest.
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