Yoshitake, Yoshihiro
Yokoo, Takayuki
Saito, Hiroki
Tsukiyama, Takuji
Quan, Xu
Zikihara, Kazunori
Katsura, Hitomi
Tokutomi, Satoru
Aboshi, Takako
Mori, Naoki
Inoue, Hiromo
Nishida, Hidetaka
Kohchi, Takayuki
Teraishi, Masayoshi
Okumoto, Yutaka
Tanisaka, Takatoshi
Article History
Received: 25 April 2014
Accepted: 8 December 2014
First Online: 9 January 2015
Competing interests
: The authors declare no competing financial interests.