Machida, Akihiko
Saitoh, Hiroyuki
Sugimoto, Hidehiko
Hattori, Takanori
Sano-Furukawa, Asami
Endo, Naruki
Katayama, Yoshinori
Iizuka, Riko
Sato, Toyoto
Matsuo, Motoaki
Orimo, Shin-ichi
Aoki, Katsutoshi
Article History
Received: 4 April 2014
Accepted: 26 August 2014
First Online: 26 September 2014
Competing interests
: The authors declare no competing financial interests.