Zhou, Yedi
Yoshida, Shigeo
Kubo, Yuki
Kobayashi, Yoshiyuki
Nakama, Takahito
Yamaguchi, Muneo
Ishikawa, Keijiro
Nakao, Shintaro
Ikeda, Yasuhiro
Ishibashi, Tatsuro
Sonoda, Koh-Hei
Article History
Received: 10 February 2016
Accepted: 27 May 2016
First Online: 17 June 2016
Competing interests
: The authors declare no competing financial interests.