Kan, Daisuke
Aso, Ryotaro
Sato, Riko
Haruta, Mitsutaka http://orcid.org/0000-0002-2237-7242
Kurata, Hiroki
Shimakawa, Yuichi
Article History
Received: 27 April 2015
Accepted: 22 January 2016
First Online: 7 March 2016
Competing interests
: The authors declare no competing financial interests.