Yamada, Yuuki
Arima, Shiho
Nagamitsu, Tohru
Johmoto, Kohei
Uekusa, Hidehiro
Eguchi, Tadashi
Shin-ya, Kazuo
Cane, David E
Ikeda, Haruo
Article History
Received: 25 September 2014
Revised: 20 November 2014
Accepted: 12 December 2014
First Online: 21 January 2015
Competing interests
: The authors declare no conflict of interest.