[1] Natl & Kapodistrian Univ Athens, Attikon Univ Hosp, Rheumatol & Clin Immunol Unit, Athens, Greece
[2] Lupus Europe, Copenhagen, Denmark
[3] Tech Univ Dresden, Div Rheumatol, Dept Med 3, Univ Med Ctr, Dresden, Germany
[4] Tech Univ Dresden, Fac Med Carl Gustav Carus, Dresden, Germany
[5] Hop Univ Strasbourg, Dept Rheumatol, INSERM, UMR S 1109,Ctr Natl Reference Malad Autoimmunes S, Strasbourg, France
[6] Hanyang Univ Inst Rheumatol Res, Dept Rheumatol, Hanyang Univ Hosp Rheumat Dis, Seoul, South Korea
[7] Hanyang Inst Biosci & Biotechnol, Seoul, South Korea
[8] Natl & Kapodistrian Univ Athens, Dept Nephrol & Renal Transplantat Unit, Laiko Gen Hosp, Sch Med, Athens, Greece
[9] Univ Manchester, Ctr Epidemiol Versus Arthrit, Manchester, Lancs, England
[10] Manchester Univ Hosp NHS Fdn Trust, Natl Inst Hlth Res, Manchester Biomed Res Ctr, Manchester Acad Hlth Sci Ctr, Manchester, Lancs, England
[11] Hosp Clin Barcelona, Dept Autoimmune Dis, Barcelona, Spain
[12] Univ Padua, Dept Med, Rheumatol Unit, Padua, Italy
[13] Charite Univ Med Berlin, Dept Rheumatol & Clin Immunol, Berlin, Germany
[14] Deutsch Rheumaforschung Zentrum, Berlin, Germany
[15] Northwell Hlth, Div Rheumatol, New York, NY USA
[16] Univ Toronto, Lupus Program, Ctr Prognosis Studies Rheumat Dis, Schroeder Arthrit Inst,Krembil Res Inst,Toronto W, Toronto, ON, Canada
[17] Catholic Univ Louvain, Serv Rhumatol, Clin Univ St Luc, Brussels, Belgium
[18] Catholic Univ Louvain, Inst Rech Expt & Clin, Brussels, Belgium
[19] Ctr Hosp & Univ Coimbra, Dept Rheumatol, Coimbra, Portugal
[20] Univ Beira Interior, Sch Hlth Sci, Coimbra, Portugal
[21] Univ Cambridge, Dept Med, Cambridge, England
[22] Cyprus League Rheumatism, Aglantzia, Cyprus
[23] Univ Szeged, Dept Rheumatol & Immunol, Fac Med, Szeged, Hungary
[24] Tuen Mun Hosp, Dept Med, Hong Kong, Peoples R China
[25] Monash Univ, Ctr Inflammatory Dis, Sch Clin Sci, Melbourne, Vic, Australia
[26] IRCCS Humanitas Res Hosp, Dept Biomed Sci, Humanitas Univ, Nephrol & Dialysis Div, Milan, Italy
[27] Univ Pisa, Rheumatol Unit, Dept Clin & Expt Med, Pisa, Italy
[28] Heinrich Heine Univ, Dept Rheumatol, UKD, Dusseldorf, Germany
[29] Heinrich Heine Univ, Hiller Res Unit Rheumatol, UKD, Dusseldorf, Germany
[30] Norfolk & Norwich Univ Hosp NHS Fdn Trust, Vasculitis Serv, Dept Rheumatol, Norwich, Norfolk, England
[31] Hosp Hosp Order St John God, Budapest, Hungary
[32] Semmelweis Univ, Dept Rheumatol & Clin Immunol, Dept Internal Med & Oncol, Budapest, Hungary
[33] Semmelweis Univ, Heart & Vasc Ctr, Budapest, Hungary
[34] Univ Santo Tomas, Sect Rheumatol, Dept Med, Manila, Philippines
[35] Karolinska Inst, Div Rheumatol, Dept Med Solna, Stockholm, Sweden
[36] Karolinska Univ Hosp, Dept Gastroenterol Dermatol & Rheumatol, Stockholm, Sweden
[37] Orebro Univ, Dept Rheumatol, Fac Med & Hlth, Orebro, Sweden
[38] Complejo Hosp Univ Vigo, Rheumatol Dept, IRIDIS, Invest Rheumatol & Immune Med Dis,VIGO Grp,Galici, Vigo, Spain
[39] Johns Hopkins Univ, Sch Med, Div Rheumatol, Dept Med, Baltimore, MD USA
[40] Ctr Reg Enfermedades Autoinmunes & Reumat GOCREA, Grp Orono, Rosario, Argentina
[41] Med Univ Vienna, Div Rheumatol, Dept Med 3, Vienna, Austria
[42] Univ Occupat & Environm Hlth, Dept Internal Med 1, Sch Med, Kitakyushu, Fukuoka, Japan
[43] Natl & Kapodistrian Univ Athens, Joint Acad Rheumatol Program, Rheumatol Unit, Dept Propaedeut Internal Med 1,Laiko Gen Hosp, Athens, Greece
[44] Leiden Univ Med Ctr, Ctr Expertise Lupus, Vasculitis & Complement Med Syst Autoimmune Dis, Dept Internal Med,Sect Nephrol, Leiden, Netherlands
[45] ASST Spedali Civili, Rheumatol & Clin Immunol, Dept Clin & Expt Sci, Brescia, Italy
[46] Univ Brescia, Brescia, Italy
[47] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Leeds, W Yorkshire, England
[48] Univ Amsterdam, Med Ctr, Dept Rheumatol & Clin Immunol, Amsterdam, Netherlands
[49] Kings Coll Hosp London, Dept Rheumatol, London, England
[50] Univ Hosp Herakl, Rheumatol Clin Immunol & Allergy, Iraklion, Greece