[1] Tech Univ Dresden, Univ Med Ctr, Med 3, D-01307 Dresden, Germany
[2] Tech Univ Dresden, Fac Med Carl Gustav Carus, D-01307 Dresden, Germany
[3] Harvard Med Sch, Brigham & Womens Hosp, Dept Med, Boston, MA 02115 USA
[4] Univ Calif San Francisco, San Francisco, CA 94143 USA
[5] VA Med Ctr, San Francisco, CA USA
[6] Heinrich Heine Univ Duesseldorf, Fac Med, Policlin & Hiller Res Unit Rheumatol, Dusseldorf, Germany
[7] Univ Pisa, Azienda Osped Univ Pisana, Dept Clin & Expt Med, Pisa, Italy
[8] Northwestern Univ, Dept Med, Feinberg Sch Med, Div Rheumatol, Chicago, IL 60611 USA
[9] Med Univ Vienna, Dept Rheumatol, Med 3, Vienna, Austria
[10] Univ Calif San Francisco, Dept Med, Russell Engleman Rheumatol Res Ctr, San Francisco, CA 94143 USA
[11] Natl & Kapodestrian Univ Athens, Sch Med, Joint Acad Rheumatol Program, Athens, Greece
[12] Athens Acad, Biomed Res Fdn, Athens, Greece
[13] Univ Cyprus, Sch Med, Dept Internal Med & Rheumatol, Nicosia, Cyprus
[14] Univ Cyprus, Sch Med, Dept Clin Immunol & Allergy, Nicosia, Cyprus
[15] Med Univ South Carolina, Dept Med, Charleston, SC 29425 USA
[16] Univ Cambridge, Dept Med, Cambridge, England
[17] Univ Barcelona, Hosp Clin, Dept Autoimmune Dis, Barcelona, Spain
[18] Univ Toronto, Mt Sinai Hosp, Toronto Scleroderma Res Program, Med,Toronto Western Hosp,Univ Hlth Network, Toronto, ON, Canada
[19] Feinstein Inst Med Res, Ctr Autoimmune Musculoskeletal & Hematopoiet Dis, Manhasset, NY USA
[20] Univ Toronto, Toronto Western Hosp, Dept Med, Div Rheumatol, Toronto, ON, Canada
[21] Univ Calif Los Angeles, David Geffen Sch Med, Div Rheumatol, Los Angeles, CA 90095 USA
[22] Charite Univ Med Berlin, Dept Rheumatol & Clin Immunol, Berlin, Germany
[23] Free Univ Berlin, Berlin, Germany
[24] Humboldt Univ, Berlin, Germany
[25] Berlin Inst Hlth, Berlin, Germany
[26] Copenhagen Univ Hosp, Rigshosp, Ctr Rheumatol & Spine Dis, Copenhagen Lupus & Vasculitis Clin, Copenhagen, Denmark
[27] Univ Michigan, Div Rheumatol, Ann Arbor, MI 48109 USA
[28] Lupus Europe, Coopted Trustee Res, Romford, Essex, England
[29] Brigham & Womens Hosp, Med, 75 Francis St, Boston, MA 02115 USA
[30] Harvard Med Sch, Dept Med, Boston, MA 02115 USA
[31] Univ Basque Country, Hosp Univ Cruces, Biocruces Bizkaia Hlth Res Inst, Autoimmune Dis Res Unit,Dept Internal Med, Bizkaia, Spain
[32] Univ Toronto, Univ Hlth Network, Mt Sinai Hosp, Div Rheumatol,Dept Med, Toronto, ON, Canada
[33] Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Dept Immunol & Rheumatol, Mexico City, DF, Mexico
[34] Heinrich Heine Univ, Fac Med, Policlin & Hiller Res Unit Rheumatol, Dusseldorf, Germany
[35] Univ Toronto, Toronto Western Hosp, Lupus Clin, Ctr Prognosis Studies Rheumat Dis, Toronto, ON, Canada
[36] Univ Crete, Sch Med, Rheumatol Clin Immunol & Allergy, Iraklion, Greece
[37] Univ Schleswig Holstein Kiel, Dept Med 3, Kiel, Germany
[38] Univ Pisa, Azienda Osped Univ Pisana, Dept Clin & Expt Med, Rheumatol Unit, Pisa, Italy
[39] Brigham & Womens Hosp, Dept Med, 75 Francis St, Boston, MA 02115 USA
[40] Univ Toronto, Toronto Western Hosp, Inst Hlth Policy Management & Evaluat, Div Rheumatol,Dept Med, Toronto, ON, Canada
[41] Univ Zagreb, Sch Med, Div Clin Immunol & Rheumatol, Zagreb, Croatia
[42] Univ Hosp Ctr Zagreb, Zagreb, Croatia
[43] Univ Paris Sud, Hop Univ Paris Sud, AP HP, Dept Rheumatol,INSERM,UMR 1184, Le Kremlin Bicetre, France
[44] Univ Hong Kong, Dept Med, Hong Kong, Peoples R China
[45] Univ Calgary, Cumming Sch Med, Div Rheumatol, Calgary, AB, Canada
[46] Hosp Special Surg, 535 E 70th St, New York, NY 10021 USA
[47] Univ Pecs, Dept Rheumatol & Immunol, Pecs, Hungary
[48] Univ Padua, Dept Med DIMED, Rheumatol Unit, Padua, Italy
[49] Med Univ Graz, Internal Med, Graz, Austria
[50] NIAMSD, Lupus Clin Res Program, Off Clin Director, NIH, Bethesda, MD 20892 USA