Kan, Tetsuo
Isozaki, Akihiro
Kanda, Natsuki
Nemoto, Natsuki
Konishi, Kuniaki
Takahashi, Hidetoshi
Kuwata-Gonokami, Makoto
Matsumoto, Kiyoshi
Shimoyama, Isao
Article History
Received: 4 February 2015
Accepted: 19 August 2015
First Online: 1 October 2015
Competing interests
: The authors declare no competing financial interests.