Harada, Naoki
Hanaoka, Ryo
Horiuchi, Hiroko
Kitakaze, Tomoya
Mitani, Takakazu
Inui, Hiroshi
Yamaji, Ryoichi
Article History
Received: 25 October 2015
Accepted: 26 February 2016
First Online: 10 March 2016
Competing interests
: The authors declare no competing financial interests.