Eguchi, K
Ohmaru, T
Ohkuchi, A http://orcid.org/0000-0002-8861-1572
Hirashima, C
Takahashi, K
Suzuki, H
Kario, K http://orcid.org/0000-0002-8251-4480
Matsubara, S
Suzuki, Mitsuaki
Article History
Received: 26 August 2014
Revised: 7 December 2014
Accepted: 8 January 2015
First Online: 19 March 2015
Competing interests
: The authors declare no conflict of interest.