Konta, Atsuko
Ozaki, Kouichi
Sakata, Yasuhiko
Takahashi, Atsushi
Morizono, Takashi
Suna, Shinichiro
Onouchi, Yoshihiro
Tsunoda, Tatsuhiko
Kubo, Michiaki
Komuro, Issei
Eishi, Yoshinobu
Tanaka, Toshihiro
Article History
Received: 19 October 2015
Revised: 18 December 2015
Accepted: 20 December 2015
First Online: 21 January 2016
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.