Moritomo, Yutaka
Yasuda, Takeshi
Yonezawa, Kouhei
Sakurai, Takeaki
Takeichi, Yasuo
Suga, Hiroki
Takahashi, Yoshio
Inami, Nobuyuki
Mase, Kazuhiko
Ono, Kanta
Article History
Received: 17 November 2014
Accepted: 6 March 2015
First Online: 30 March 2015
Competing interests
: The authors declare no competing financial interests.