[1] Diakonhjemmet Hosp, Oslo, Norway
[2] Univ Leeds, Leeds, W Yorkshire, England
[3] Oregon Hlth & Sci Univ, Portland, OR 97201 USA
[4] Paris 06 Univ, Paris, France
[5] Rigshosp, Copenhagen Ctr Arthrit Res COPECARE, Copenhagen, Denmark
[6] Hosp Clin Barcelona, Barcelona, Spain
[7] IDIBAPS, Barcelona, Spain
[8] Novartis Pharmaceut, E Hanover, NJ USA
[9] Novartis Pharma AG, Basel, Switzerland
[10] RTI Hlth Solut, Durham, NC USA