Wang, Wenqian
Tabu, Kouichi
Hagiya, Yuichiro
Sugiyama, Yuta
Kokubu, Yasuhiro
Murota, Yoshitaka
Ogura, Shun-ichiro
Taga, Tetsuya
Article History
Received: 17 August 2016
Accepted: 5 January 2017
First Online: 7 February 2017
Competing interests
: The authors declare no competing financial interests.