Yokoi, Tadashi
Nishina, Sachiko
Fukami, Maki
Ogata, Tsutomu http://orcid.org/0000-0001-7178-9991
Hosono, Katsuhiro
Hotta, Yoshihiro
Azuma, Noriyuki
Article History
Received: 21 April 2015
Revised: 9 September 2015
Accepted: 28 September 2015
First Online: 11 February 2016
Competing interests
: The authors declare no conflict of interest.