Koarai, Kazuma
Kino, Yasushi
Takahashi, Atsushi
Suzuki, Toshihiko
Shimizu, Yoshinaka
Chiba, Mirei
Osaka, Ken
Sasaki, Keiichi
Fukuda, Tomokazu
Isogai, Emiko
Yamashiro, Hideaki
Oka, Toshitaka
Sekine, Tsutomu
Fukumoto, Manabu
Shinoda, Hisashi
Article History
Received: 12 November 2015
Accepted: 15 March 2016
First Online: 5 April 2016
Competing interests
: The authors declare no competing financial interests.