[1] Sanjay Gandhi Postgrad Inst Med Sci, Lucknow, Uttar Pradesh, India
[2] Karolinska Inst, Stockholm, Sweden
[3] Byramjee Jeejeebhoy Govt Med Coll, Pune, Maharashtra, India
[4] Sassoon Gen Hosp, Pune, Maharashtra, India
[5] Maulana Azad Med Coll, New Delhi, India
[6] Univ Illinois, Coll Med Peoria, Peoria, IL USA
[7] Mahatma Gandhi Miss Med Coll, Lucknow, Uttar Pradesh, India
[8] Istanbul Univ, Istanbul, Turkey
[9] Univ Manchester, Manchester, Lancs, England
[10] Univ Manchester, Sale, Manchester, Lancs, England
[11] Univ Zurich, Univ Zurich Hosp, Dept Rheumatol, Zurich, Switzerland
[12] Univ Leeds, Leeds, W Yorkshire, England
[13] Univ Sao Paulo, Fac Med FMUSP, Sao Paulo, Brazil
[14] Fauji Fdn Hosp Rawalpindi, Rawalpindi, Pakistan
[15] Cairo Univ, Dept Rheumatol, Fac Med, Cairo, Egypt
[16] St Joseph Univ, Beirut, Lebanon
[17] Sofia Univ St Kliment Ohridski, Sofia, Bulgaria
[18] Southport & Ormskirk Hosp NHS Trust, Southport, Qld, Australia
[19] Pomeranian Med Univ, Szczecin, Poland
[20] Inst Mexicano Seguro Social, Mexico City, DF, Mexico
[21] Hosp Univ Vall dHebron, Barcelona, Spain
[22] IMSS, Mexico City, DF, Mexico
[23] Univ Pavia, Fdn IRCCS Policlin San Matteo, Pavia, Italy
[24] Nippon Med Sch Grad Sch Med, Tokyo, Japan
[25] Friedrich Alexander Univ Erlangen Nurnberg, Dept Internal Med 3, Rheumatol & Immunol, D-91054 Erlangen, Germany
[26] Univ Klinikum Erlangen, D-91054 Erlangen, Germany
[27] Friedrich Alexander Univ Erlangen Nurnberg, Deutsch Zentrum Immuntherapie, Erlangen, Germany
[28] Walter & Eliza Hall Inst Med Res, Melbourne, Vic, Australia
[29] Mayo Clin, Rochester, MN USA
[30] North Bristol NHS Trust, Bristol, Avon, England
[31] UCL, Rayne Inst, London, England
[32] Ctr Med Pens, Merida, Mexico
[33] Hosp Angeles Villahermosa, Mexico City, DF, Mexico
[34] Ctr Est Inv Bas & Clin SC, Guadalajara, Mexico
[35] Univ Pittsburgh, Dept Med, Div Rheumatol & Clin Immunol, Pittsburgh, PA USA
[36] Royal Wolverhampton Trust, Wolverhampton, England
[37] Univ Manchester, Manchester, Lancs, England
[38] Leiden Univ Med Ctr, Leiden, Netherlands
[39] Kings Coll London, London, England
[40] CoVAD Study Grp, Wolwehampton, England