Nakashima, Hiroaki
Ohkawara, Bisei
Ishigaki, Shinsuke
Fukudome, Takayasu
Ito, Kenyu
Tsushima, Mikito
Konishi, Hiroyuki
Okuno, Tatsuya
Yoshimura, Toshiro
Ito, Mikako
Masuda, Akio
Sobue, Gen
Kiyama, Hiroshi
Ishiguro, Naoki
Ohno, Kinji
Article History
Received: 7 October 2015
Accepted: 6 June 2016
First Online: 22 June 2016
Competing interests
: The authors declare no competing financial interests.