Kitanaka, Yuuki
Hirano, Kiyotaka
Ogino, Motohiro
Noguchi, Yuji
Miyayama, Masaru
Moriyoshi, Chikako
Kuroiwa, Yoshihiro
Article History
Received: 20 May 2016
Accepted: 3 August 2016
First Online: 2 September 2016
Competing interests
: The authors declare no competing financial interests.