Motohashi, Keiichiro
Izumikawa, Miho http://orcid.org/0000-0001-5277-5260
Kagaya, Noritaka
Takagi, Motoki
Shin-ya, Kazuo
Article History
Received: 14 October 2015
Revised: 13 November 2015
Accepted: 24 November 2015
First Online: 6 January 2016
Competing interests
: The authors declare no conflict of interest.
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