Takakura, Hisashi
Furuichi, Yasuro
Yamada, Tatsuya
Jue, Thomas
Ojino, Minoru
Hashimoto, Takeshi
Iwase, Satoshi
Hojo, Tatsuya
Izawa, Tetsuya
Masuda, Kazumi
Article History
Received: 29 August 2014
Accepted: 3 March 2015
First Online: 24 March 2015
Competing interests
: The authors declare no competing financial interests.