Sugiura, Hiroko
Yasuda, Shin
Katsurabayashi, Shutaro
Kawano, Hiroyuki
Endo, Kentaro
Takasaki, Kotaro
Iwasaki, Katsunori
Ichikawa, Masumi
Kobayashi, Toshiyuki
Hino, Okio
Yamagata, Kanato
Article History
Received: 27 August 2014
Accepted: 3 March 2015
First Online: 16 April 2015
Competing interests
: The authors declare no competing financial interests.