Yamauchi, Ryosuke
Hamasaki, Yosuke
Shibuya, Takuto
Saito, Akira
Tsuchimine, Nobuo
Koyama, Koji
Matsuda, Akifumi
Yoshimoto, Mamoru
Article History
Received: 30 May 2015
Accepted: 24 August 2015
First Online: 24 September 2015
Competing interests
: The authors declare no competing financial interests.