Nagasawa, Hiroki
Ishikawa, Kouhei
Takahashi, Ryosuke
Takeuchi, Ikuto
Jitsuiki, Kei
Ohsaka, Hiromichi
Omori, Kazuhiko
Yanagawa, Youichi
Article History
Received: 5 April 2017
Revised: 6 July 2017
Accepted: 10 July 2017
First Online: 17 August 2017
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.