Hirata, Shuzo
Sakai, Yumi
Masui, Kensuke
Tanaka, Hiroyuki
Lee, Sae Youn
Nomura, Hiroko
Nakamura, Nozomi
Yasumatsu, Mao
Nakanotani, Hajime
Zhang, Qisheng
Shizu, Katsuyuki
Miyazaki, Hiroshi
Adachi, Chihaya
Article History
Received: 7 May 2013
Accepted: 30 October 2014
First Online: 8 December 2014
Competing interests
: The authors declare no competing financial interests.