Toko Hashimoto, Shinsuke Yasuda*, Hideyuki Koide, Hiroshi Kataoka, Tetsuya Horita, Tatsuya Atsumi and Takao Koike
* Corresponding author: Shinsuke Yasuda syasuda@med.hokudai.ac.jp
Arthritis Research & Therapy 2011, 13:R154 doi:10.1186/ar3470