[1] Hop Ambroise Pare, AP HP, Dept Rheumatol, 9 Ave Charles de Gaulle, F-92100 Boulogne, France
[2] Versailles St Quentin Yvelines Univ, Dept Rheumatol, Ambroise Pare Hosp, AP HP, Boulogne, France
[3] Vrije Univ Amsterdam Med Ctr, Dept Epidemiol & Biostat, Amsterdam, Netherlands
[4] Vrije Univ Amsterdam Med Ctr, Dept Rheumatol, Amsterdam, Netherlands
[5] Univ Bristol, Acad Rheumatol Unit, Bristol Royal Infirm, Bristol, Avon, England
[6] Leiden Univ Med Ctr, Dept Rheumatol, Leiden, Netherlands
[7] Copenhagen Univ Hosp Glostrup, Copenhagen Ctr Arthrit Res, Ctr Rheumatol & Spine Dis, Copenhagen, Denmark
[8] Univ Erlangen Nurnberg, Dept Internal Med 3, D-91054 Erlangen, Germany
[9] Univ Erlangen Nurnberg, Inst Clin Immunol, D-91054 Erlangen, Germany
[10] Univ Amsterdam, Acad Med Ctr, Dept Clin Immunol & Rheumatol, NL-1105 AZ Amsterdam, Netherlands
[11] Atrium Med Ctr, Amsterdam, Netherlands
[12] Univ Alberta, Dept Med, Edmonton, AB, Canada
[13] Hosp Gen Gregorio Maranon, Dept Rheumatol, Madrid, Spain
[14] Paris Descartes Univ, Fac Med, Cochin Hosp, AP HP,Rheumatol B, Paris, France
[15] Univ Roma La Sapienza, Rheumatol Unit, I-00185 Rome, Italy
[16] Johns Hopkins Univ, Div Rheumatol, Baltimore, MD USA
[17] Univ Melbourne, Melbourne, Vic, Australia
[18] St Michaels Hosp, Mobil Program Clin Res Unit, Toronto, ON M5B1W8, Canada
[19] Univ Paris 06, Pitie Salpetriere Hosp, AP HP, Dept Rheumatol,GRC UPMC EEMOIS 08, Paris, France
[20] Univ Lorraine, Univ Paris 05, EA APEMAC 4360, Nancy, France
[21] CHU Nancy, Inserm CIC EC, Nancy, France
[22] Univ W England, Dept Nursing, Bristol BS161QY, Avon, England
[23] Swedish Med Ctr, Seattle, WA USA
[24] Univ Washington, Seattle, WA 98195 USA
[25] Inst Poal, Barcelona, Spain
[26] SDG LLC, Cambridge, MA USA
[27] Birmingham Vet Affairs Med Ctr, Birmingham, AL USA
[28] Univ Alabama Birmingham, Birmingham, AL USA
[29] Stanford Univ, Sch Med, Div Immunol Rheumatol, Palo Alto, CA 94304 USA
[30] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Leeds, W Yorkshire, England
[31] Univ Ottawa, Dept Med, Ottawa, ON, Canada