Kiryu, Shigeru http://orcid.org/0000-0003-1440-9483
Akai, Hiroyuki
Nojima, Masanori
Hasegawa, Kiyoshi
Shinkawa, Hiroji
Kokudo, Norihiro
Yasaka, Koichiro http://orcid.org/0000-0002-0324-6562
Ohtomo, Kuni
Article History
Received: 22 June 2017
Accepted: 13 September 2017
First Online: 4 October 2017
Competing Interests
: The authors declare that they have no competing interests.