Ohkubo, Kazuhiro
Sakai, Yasunari
Inoue, Hirosuke
Akamine, Satoshi
Ishizaki, Yoshito
Matsushita, Yuki
Sanefuji, Masafumi
Torisu, Hiroyuki
Ihara, Kenji
Sardiello, Marco
Hara, Toshiro
Article History
Received: 19 March 2015
Accepted: 3 July 2015
First Online: 17 August 2015
Competing interests
: The authors declare no competing financial interests.