Yoshimura, Chihiro
Yamaoka, Masanao
Hayashi, Masato
Okuyama, Takuya
Aoki, Hidetaka
Kawarabayashi, Ken-ichi
Mizuno, Hiroyuki
Article History
Received: 10 May 2015
Accepted: 5 October 2015
First Online: 20 November 2015
Competing interests
: The authors declare no competing financial interests.