Fukushima, S.
Furukawa, T.
Niioka, H.
Ichimiya, M.
Sannomiya, T.
Tanaka, N.
Onoshima, D.
Yukawa, H.
Baba, Y.
Ashida, M.
Miyake, J.
Araki, T.
Hashimoto, M.
Article History
Received: 22 October 2015
Accepted: 20 April 2016
First Online: 17 May 2016
Competing interests
: The authors declare no competing financial interests.