Ban, Tadato
Ishihara, Takaya
Kohno, Hiroto
Saita, Shotaro
Ichimura, Ayaka
Maenaka, Katsumi http://orcid.org/0000-0002-5459-521X
Oka, Toshihiko
Mihara, Katsuyoshi
Ishihara, Naotada http://orcid.org/0000-0002-6305-7149
Article History
Received: 8 September 2016
Accepted: 19 May 2017
First Online: 19 June 2017
Competing interests
: The authors declare no competing financial interests.