Kinoshita, Chisato
Aoyama, Koji
Matsumura, Nobuko
Kikuchi-Utsumi, Kazue
Watabe, Masahiko
Nakaki, Toshio
Article History
Received: 19 September 2013
Accepted: 7 April 2014
First Online: 7 May 2014
Competing interests
: The authors declare no competing financial interests.