Ito, Minako
Shichita, Takashi
Okada, Masahiro
Komine, Ritsuko
Noguchi, Yoshiko
Yoshimura, Akihiko
Morita, Rimpei
Article History
Received: 14 January 2015
Accepted: 30 April 2015
First Online: 10 June 2015
Competing interests
: The authors declare no competing financial interests.