Hirata, Chiaki
Miyai, Nobuyuki
Idoue, Ayaka
Utsumi, Miyoko
Hattori, Sonomi
Iwahara, Akihiko
Uematsu, Yuji
Shiba, Mitsuru
Arita, Mikio
Article History
Received: 26 May 2015
Revised: 21 October 2015
Accepted: 26 October 2015
First Online: 21 January 2016
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.