Hosoo, Shingo
Koyama, Masahiro
Watanabe, Akira
Ishida, Ryuya
Hirata, Tetsuya
Yamaguchi, Yasuyo
Yamasaki, Hiroo
Wada, Keiji
Higashi, Yukihito
Nakamura, Kozo
Article History
Received: 14 September 2016
Revised: 5 November 2016
Accepted: 20 November 2016
First Online: 19 January 2017
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.