Nakamura, Katsuyuki
Fujii, Wataru
Tsuboi, Masaya
Tanihata, Jun
Teramoto, Naomi
Takeuchi, Shiho
Naito, Kunihiko
Yamanouchi, Keitaro
Nishihara, Masugi
Article History
Received: 20 February 2014
Accepted: 23 June 2014
First Online: 9 July 2014
Competing interests
: The authors declare no competing financial interests.