Kondo, T
Ozawa, S
Ikoma, T
Yang, X-Y
Kanamori, K
Suzuki, K
Iwabuchi, H
Maehata, Y
Miyamoto, C
Taguchi, T
Kiyono, T
Kubota, E
Hata, R-I
Article History
Received: 23 December 2015
Revised: 4 May 2016
Accepted: 18 May 2016
First Online: 11 July 2016
Competing interests
: The authors declare no conflict of interest.