Jin, Rui-Bo
Shimizu, Ryosuke
Morohashi, Isao
Wakui, Kentaro
Takeoka, Masahiro
Izumi, Shuro
Sakamoto, Takahide
Fujiwara, Mikio
Yamashita, Taro
Miki, Shigehito
Terai, Hirotaka
Wang, Zhen
Sasaki, Masahide
Article History
Received: 9 September 2014
Accepted: 26 November 2014
First Online: 19 December 2014
Competing interests
: The authors declare no competing financial interests.