Miyazaki, T
Ikeda, K
Horie-Inoue, K
Kondo, T
Takahashi, S
Inoue, S
Article History
Received: 18 August 2014
Revised: 22 September 2014
Accepted: 30 September 2014
First Online: 3 November 2014
Competing interests
: The authors declare no conflict of interest.