Matsubara, Keiichi
Matsubara, Yuko
Mori, Miki
Uchikura, Yuka
Hamada, Katsuyuki
Fujioka, Toru
Hashimoto, Hisashi
Matsumoto, Takashi
Article History
Received: 8 February 2015
Revised: 17 October 2015
Accepted: 26 October 2015
First Online: 14 January 2016
Competing interests
: The authors declare no conflict of interest.