Sakurai, Takayuki
Kamiyoshi, Akiko
Kawate, Hisaka
Mori, Chie
Watanabe, Satoshi
Tanaka, Megumu
Uetake, Ryuichi
Sato, Masahiro
Shindo, Takayuki
Article History
Received: 22 September 2015
Accepted: 7 December 2015
First Online: 28 January 2016
Competing interests
: The authors declare no competing financial interests.