Kurioka, Daisuke
Takeshita, Fumitaka
Tsuta, Koji
Sakamoto, Hiromi
Watanabe, Shun-ichi
Matsumoto, Kenji
Watanabe, Masatoshi
Nakagama, Hitoshi
Ochiya, Takahiro
Yokota, Jun
Kohno, Takashi
Tsuchiya, Naoto
Article History
Received: 3 June 2014
Accepted: 31 July 2014
First Online: 18 August 2014
Competing interests
: The authors declare no competing financial interests.