Tokunaga, Yumie
Shirouzu, Masamichi
Sugahara, Ryota
Yoshiura, Yasutoshi
Kiryu, Ikunari
Ototake, Mitsuru
Nagasawa, Takahiro
Somamoto, Tomonori
Nakao, Miki
Article History
Received: 1 December 2016
Accepted: 6 July 2017
First Online: 8 August 2017
Competing Interests
: The authors declare that they have no competing interests.