Aizawa, Naoya
Pu, Yong-Jin
Watanabe, Michitake
Chiba, Takayuki
Ideta, Kazushige
Toyota, Naoki
Igarashi, Masahiro
Suzuri, Yoshiyuki
Sasabe, Hisahiro
Kido, Junji
Article History
Received: 6 February 2014
Accepted: 5 November 2014
First Online: 18 December 2014
Competing interests
: The authors declare no competing financial interests.