Ideue, T.
Hamamoto, K.
Koshikawa, S.
Ezawa, M. http://orcid.org/0000-0002-3629-5643
Shimizu, S.
Kaneko, Y.
Tokura, Y.
Nagaosa, N.
Iwasa, Y.
Article History
Received: 31 October 2016
Accepted: 2 February 2017
First Online: 6 March 2017
Competing interests
: The authors declare no competing financial interests.