Kawanaka, Hirofumi
Aiura, Yoshihiro
Hasebe, Takayuki
Yokoyama, Makoto
Masui, Takahiko
Nishihara, Yoshikazu
Yanagisawa, Takashi
Article History
Received: 17 June 2016
Accepted: 26 September 2016
First Online: 14 October 2016
Competing interests
: The authors declare no competing financial interests.