Ikenoue, Tsuneo
Yamaguchi, Kiyoshi
Komura, Mitsuhiro
Imoto, Seiya
Yamaguchi, Rui
Shimizu, Eigo
Kasuya, Shinichi
Shibuya, Tetsuo
Hatakeyama, Seira
Miyano, Satoru
Furukawa, Yoichi
Article History
Received: 17 October 2014
Revised: 13 January 2015
Accepted: 13 January 2015
First Online: 26 March 2015
Competing interests
: The authors declare no conflict of interest.