Hara, Hiromitsu
Yokosuka, Tadashi
Hirakawa, Hideki
Ishihara, Chitose
Yasukawa, Shinsuke
Yamazaki, Masanori
Koseki, Haruhiko
Yoshida, Hiroki
Saito, Takashi
Article History
Received: 22 May 2012
Accepted: 13 October 2014
First Online: 20 January 2015
Competing interests
: The authors declare no competing financial interests.