Yoshimi, Akihide
Toya, Takashi
Kawazu, Masahito
Ueno, Toshihide
Tsukamoto, Ayato
Iizuka, Hiromitsu
Nakagawa, Masahiro
Nannya, Yasuhito
Arai, Shunya
Harada, Hironori
Usuki, Kensuke
Hayashi, Yasuhide
Ito, Etsuro
Kirito, Keita
Nakajima, Hideaki
Ichikawa, Motoshi
Mano, Hiroyuki
Kurokawa, Mineo
Article History
Received: 29 January 2014
Accepted: 21 July 2014
First Online: 27 August 2014
Competing interests
: The authors declare no competing financial interests.