Aoki, Dan
Hanaya, Yuto
Akita, Takuya
Matsushita, Yasuyuki
Yoshida, Masato
Kuroda, Katsushi
Yagami, Sachie
Takama, Ruka
Fukushima, Kazuhiko
Article History
Received: 3 June 2016
Accepted: 21 July 2016
First Online: 11 August 2016
Competing interests
: The authors declare no competing financial interests.