Ohira, Takahito
Naohiro, Sunamura
Nakayama, Yuji
Osaki, Mitsuhiko
Okada, Futoshi
Oshimura, Mitsuo
Kugoh, Hiroyuki
Article History
Received: 13 October 2014
Accepted: 12 January 2015
First Online: 3 February 2015
Competing interests
: The authors declare no competing financial interests.