Hamakawa, T
Kukita, Y
Kurokawa, Y
Miyazaki, Y
Takahashi, T
Yamasaki, M
Miyata, H
Nakajima, K
Taniguchi, K
Takiguchi, S
Mori, M
Doki, Y
Kato, K
Article History
Received: 17 March 2014
Revised: 18 August 2014
Accepted: 4 November 2014
First Online: 9 December 2014
Competing interests
: The authors declare no conflict of interest.