Takeuchi, Jun
Okamoto, Masanori
Akiyama, Tomonori
Muto, Takuya
Yajima, Shunsuke
Sue, Masayuki
Seo, Mitsunori
Kanno, Yuri
Kamo, Tsunashi
Endo, Akira
Nambara, Eiji
Hirai, Nobuhiro
Ohnishi, Toshiyuki
Cutler, Sean R
Todoroki, Yasushi
Article History
Received: 30 September 2013
Accepted: 7 April 2014
First Online: 4 May 2014
Competing interests
: The authors declare no competing financial interests.