Feng, Bin http://orcid.org/0000-0002-4306-2979
Yokoi, Tatsuya
Kumamoto, Akihito
Yoshiya, Masato
Ikuhara, Yuichi
Shibata, Naoya
Article History
Received: 25 November 2015
Accepted: 19 February 2016
First Online: 23 March 2016
Competing interests
: The authors declare no competing financial interests.