Yoshimi, Kazuto
Kunihiro, Yayoi
Kaneko, Takehito
Nagahora, Hitoshi
Voigt, Birger
Mashimo, Tomoji
Article History
Received: 9 November 2015
Accepted: 7 December 2015
First Online: 20 January 2016
Competing interests
: H.N. is an employee of BioDynamics Laboratory Inc. All other authors declare no competing financial interest.