Kotani, Yuri
Morito, Daisuke
Yamazaki, Satoru
Ogino, Kazutoyo
Kawakami, Koichi
Takashima, Seiji
Hirata, Hiromi
Nagata, Kazuhiro
Article History
Received: 12 August 2015
Accepted: 1 October 2015
First Online: 4 November 2015
Competing interests
: The authors declare no competing financial interests.