Okuoka, Shin-ichi
Ogasawara, Yoshiyuki
Suga, Yosuke
Hibino, Mitsuhiro
Kudo, Tetsuichi
Ono, Hironobu
Yonehara, Koji
Sumida, Yasutaka
Yamada, Yuki
Yamada, Atsuo
Oshima, Masaharu
Tochigi, Eita
Shibata, Naoya
Ikuhara, Yuichi
Mizuno, Noritaka
Article History
Received: 14 May 2014
Accepted: 24 June 2014
First Online: 14 July 2014
Competing interests
: The authors declare no competing financial interests.