Inoue, Jun
Yamazaki, Akira
Ono, Jun
Dethloff, Klaus
Maturilli, Marion
Neuber, Roland
Edwards, Patti
Yamaguchi, Hajime
Article History
Received: 22 May 2015
Accepted: 21 October 2015
First Online: 20 November 2015
Competing interests
: The authors declare no competing financial interests.