Kasuga, Kensaku
Kikuchi, Masataka
Tokutake, Takayoshi
Nakaya, Akihiro
Tezuka, Toshiyuki
Tsukie, Tamao
Hara, Norikazu
Miyashita, Akinori http://orcid.org/0000-0003-2508-9649
Kuwano, Ryozo
Ikeuchi, Takeshi
Article History
Received: 7 November 2014
Revised: 7 January 2015
Accepted: 13 January 2015
First Online: 19 February 2015
Competing interests
: The authors declare no conflict of interest.