[1] Diakonhjemmet Hosp, Oslo, Norway
[2] Oregon Hlth & Sci Univ, Portland, OR 97201 USA
[3] UPMC Univ Paris 06, Paris, France
[4] Univ Leeds, Leeds, W Yorkshire, England
[5] Stanford Univ, Sch Med, Palo Alto, CA 94304 USA
[6] Copenhagen Ctr Arthrit Res COPECARE, Glostrup, Denmark
[7] RTI Hlth Solut, Durham, NC USA
[8] Novartis Pharmaceut, E Hanover, NJ USA
[9] Novartis Pharma AG, Basel, Switzerland