Koshizuka, Keiichi
Hanazawa, Toyoyuki
Fukumoto, Ichiro
Kikkawa, Naoko
Matsushita, Ryosuke
Mataki, Hiroko
Mizuno, Keiko http://orcid.org/0000-0001-6738-7906
Okamoto, Yoshitaka
Seki, Naohiko
Article History
Received: 24 March 2016
Revised: 7 April 2016
Accepted: 8 April 2016
First Online: 12 May 2016
Competing interests
: The authors declare no conflict of interest.
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