Park, Hyun Soon
Yu, Xiuzhen
Aizawa, Shinji
Tanigaki, Toshiaki
Akashi, Tetsuya
Takahashi, Yoshio
Matsuda, Tsuyoshi
Kanazawa, Naoya
Onose, Yoshinori
Shindo, Daisuke
Tonomura, Akira
Tokura, Yoshinori
Article History
Received: 23 August 2013
Accepted: 17 February 2014
First Online: 13 April 2014
Competing interests
: The authors declare no competing financial interests.