Sasaki, Yuka
Kamiyama, Shuhei
Kamiyama, Azusa
Matsumoto, Konomi
Akatsu, Moe
Nakatani, Yoshihito
Kuwata, Hiroshi
Ishikawa, Yukio
Ishii, Toshiharu
Yokoyama, Chieko
Hara, Shuntaro
Article History
Received: 8 September 2015
Accepted: 29 October 2015
First Online: 27 November 2015
Competing interests
: The authors declare no competing financial interests.