Shimizu, Takao
Katayama, Kiliha
Kiguchi, Takanori
Akama, Akihiro
Konno, Toyohiko J.
Sakata, Osami
Funakubo, Hiroshi
Article History
Received: 12 April 2016
Accepted: 15 August 2016
First Online: 9 September 2016
Competing interests
: The authors declare no competing financial interests.