Ishiba, Toshiyuki
Nagahara, Makoto
Nakagawa, Tsuyoshi
Sato, Takanobu
Ishikawa, Toshiaki
Uetake, Hiroyuki
Sugihara, Kenichi
Miki, Yoshio
Nakanishi, Akira
Article History
Received: 17 March 2014
Accepted: 28 October 2014
First Online: 17 November 2014
Competing interests
: The authors declare no competing financial interests.