Kikuchi, Norimasa
Nishiyama, Takeshi
Sawada, Takayuki
Wang, Chaochen
Lin, Yingsong
Watanabe, Yoshiyuki
Tamakoshi, Akiko
Kikuchi, Shogo
Article History
Received: 10 May 2016
Accepted: 6 December 2016
First Online: 16 January 2017
Competing interests
: The authors declare no competing financial interests.