Nakajima, Shuta
Tomita, Takafumi
Taie, Shintaro
Ichinose, Tomohiro
Ozawa, Hideki
Wang, Lei
Troyer, Matthias http://orcid.org/0000-0002-1469-9444
Takahashi, Yoshiro
Article History
Received: 8 July 2015
Accepted: 30 November 2015
First Online: 18 January 2016
Competing interests
: The authors declare no competing financial interests.