Tanigawa, T
Shibata, R
Ouchi, N
Kondo, K
Ishii, M
Katahira, N
Kambara, T
Inoue, Y
Takahashi, R
Ikeda, N
Kihara, S
Ueda, H
Murohara, T
Article History
Received: 26 November 2013
Revised: 6 February 2014
Accepted: 24 February 2014
First Online: 24 April 2014
Competing interests
: The authors declare no conflict of interest.