Ueda, Hiroaki
Kamae, Youichi http://orcid.org/0000-0003-0461-5718
Hayasaki, Masamitsu
Kitoh, Akio
Watanabe, Shigeru
Miki, Yurisa
Kumai, Atsuki
Article History
Received: 16 February 2015
Accepted: 9 October 2015
First Online: 13 November 2015
Competing interests
: The authors declare no competing financial interests.