Fukagawa, Hirohiko
Shimizu, Takahisa
Kamada, Taisuke
Yui, Shota
Hasegawa, Munehiro
Morii, Katsuyuki
Yamamoto, Toshihiro
Article History
Received: 3 November 2014
Accepted: 19 March 2015
First Online: 18 May 2015
Competing interests
: The authors declare no competing financial interests.