Furutani, Shogo
Nakatani, Yuri
Miura, Yuka
Ihara, Makoto
Kai, Kenji
Hayashi, Hideo
Matsuda, Kazuhiko
Article History
Received: 17 July 2014
Accepted: 6 August 2014
First Online: 26 August 2014
Competing interests
: The authors declare no competing financial interests.