Murakami, Masahiro
Nishina, Kazutaka
Watanabe, Chie
Yoshida-Tanaka, Kie
Piao, Wenying
Kuwahara, Hiroya
Horikiri, Yuji
Miyata, Kanjiro
Nishiyama, Nobuhiro
Kataoka, Kazunori
Yoshida, Masayuki
Mizusawa, Hidehiro
Yokota, Takanori
Article History
Received: 27 April 2015
Accepted: 21 October 2015
First Online: 23 November 2015
Competing interests
: The authors declare no competing financial interests.