Ueno-Yokohata, Hitomi
Okita, Hajime
Nakasato, Keiko
Akimoto, Shingo
Hata, Jun-ichi
Koshinaga, Tsugumichi
Fukuzawa, Masahiro
Kiyokawa, Nobutaka
Article History
Received: 4 November 2014
Accepted: 18 May 2015
First Online: 22 June 2015
Competing interests
: The authors declare no competing financial interests.