Kimura, Junpei
Ichii, Osamu
Miyazono, Kosuke
Nakamura, Teppei
Horino, Taro
Otsuka-Kanazawa, Saori
Kon, Yasuhiro
Article History
Received: 5 September 2014
Accepted: 12 November 2014
First Online: 3 December 2014
Competing interests
: The authors declare no competing financial interests.