Ichimura, Taro
Chiu, Liang-da
Fujita, Katsumasa
Machiyama, Hiroaki
Kawata, Satoshi
Watanabe, Tomonobu M.
Fujita, Hideaki
Article History
Received: 28 January 2015
Accepted: 21 May 2015
First Online: 16 June 2015
Competing interests
: The authors declare no competing financial interests.