[1] Aga Khan Univ Hosp, Med Coll, Natl Stadium Rd, Karachi 3500, Sindh, Pakistan
[2] Maulana Azad Med Coll, 2 Bahadurshah Zafar Marg, Delhi 110002, India
[3] Byramjee Jeejeebhoy Govt Med Coll & Sassoon Gen H, Pune, Maharashtra, India
[4] Sanjay Gandhi Postgrad Inst Med Sci, Dept Clin Immunol & Rheumatol, Lucknow, Uttar Pradesh, India
[5] Univ Manchester, Manchester Acad Hlth Sci Ctr, Fac Biol,Div Musculoskeletal & Dermatol Sci, Ctr Musculoskeletal Res,Sch Biol Sci, Manchester, Lancs, England
[6] Northern Care Alliance NHS Fdn Trust, Manchester Ctr Clin Neurosci, Neurol, Salford, Lancs, England
[7] Mahatma Gandhi Mission Med Coll, Navi Mumbai, Navi Mumbai, Maharashtra, India
[8] Istanbul Univ, Istanbul Fac Med, Dept Med Ecol & Hydroclimatol, TR-34093 Istanbul, Turkey
[9] Univ Illinois Coll Med Peoria, Ctr Outcomes Res, Dept Internal Med, Peoria, IL USA
[10] Royal Melbourne Hosp, Dept Rheumatol, Parkville, Vic 3050, Australia
[11] Walter & Eliza Hall Inst Med Res, Parkville, Vic 3052, Australia
[12] Univ Melbourne, Dept Med Biol, Parkville, Vic 3052, Australia
[13] Mayo Clin, Div Rheumatol, Rochester, MN USA
[14] Pomeranian Med Univ, Dept Internal Med Rheumatol Diabetol Geriatr & Cl, Ul Unii Lubelskiej 1, PL-71252 Szczecin, Poland
[15] Cairo Univ, Kasr Al Ainy Sch Med, Rheumatol Dept, Cairo, Egypt
[16] Fauji Fdn Hosp, Rheumatol Dept, Rawalpindi, Pakistan
[17] Sofia Univ St Kliment Ohridski, Univ Hosp Lozenetz, Med Fac, Dept Clin Immunol, 1 Kozyak Str, Sofia 1407, Bulgaria
[18] Inst Mexicano Seguro Social, Natl Med Ctr, Gen Hosp, Dept Internal Med, Av Jacaranda S-N, Mexico City 02990, DF, Mexico
[19] Karolinska Inst, Dept Med Solna, Div Rheumatol, Stockholm, Sweden
[20] Karolinska Univ Hosp, Stockholm, Sweden
[21] Orebro Univ, Fac Med & Hlth, Dept Rheumatol, Orebro, Sweden
[22] Kings Coll London, Ctr Rheumat Dis, London, England
[23] Kings Coll Hosp London, Rheumatol Dept, London, England
[24] Leeds Teaching Hosp Trust, NIHR Leeds Biomed Res Ctr, Leeds, W Yorkshire, England
[25] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Leeds, W Yorkshire, England
[26] Fdn IRCCS Policlin San Matteo, Dept Rheumatol, Pavia, Italy
[27] Univ Pavia, Rheumatol Unit, Dipartimento Med Interna & Terapia Med, Pavia, Italy
[28] IMSS, Ctr Med Nacl La Raza, Dept Reumatol Hosp Especialidades Dr Antonio Frag, Mexico City, DF, Mexico
[29] Univ Sao Paulo, Fac Med FMUSP, Div Rheumatol, Sao Paulo, SP, Brazil
[30] St Joseph Univ, Rheumatol Dept, Beirut, Lebanon
[31] Hotel Dieu France Hosp, Rheumatol Dept, Beirut, Lebanon
[32] Southport & Ormskirk Hosp NHS Trust, Southport PR8 6PN, England
[33] Univ Autonoma Barcelona, Vall dHebron Gen Hosp, Med Dept, Syst Autoimmune Dis Unit, Barcelona, Spain
[34] Friedrich Alexander Univ Erlangen Nurnberg, Univ Klinikum Erlangen, Med Klin Rheumatol & Immunol 3, Ulmenweg 18, D-91054 Erlangen, Germany
[35] Nippon Med Sch, Dept Allergy & Rheumatol, Grad Sch Med, Bunkyo Ku, 1-1-5 Sendagi, Tokyo 1138602, Japan
[36] Pontificia Javeriana Univ, Reference Ctr Osteoporosis Rheumatol & Dermatol, Internal Med & Rheumatol, Ubicado Cra 77A 5B 5-96 B, Cali, Colombia
[37] Hosp Univ Norte, Dept Med, Barranquilla, Colombia
[38] Univ Ghana Sch Med & Dent, Coll Hlth Sci, Dept Med & Therapeut, Korle Bu, Accra, Ghana
[39] Univ Zurich, Univ Hosp Zurich, Dept Rheumatol, Zurich, Switzerland
[40] Univ Manchester, Ctr Musculoskeletal Res, Sch Biol Sci, Div Musculoskeletal & Dermatol Sci, Manchester, Lancs, England
[41] Univ Manchester, Manchester Univ NHS Fdn Trust, Natl Inst Hlth Res, Manchester Biomed Res Ctr, Manchester, Lancs, England
[42] Northern Care Alliance NHS Fdn Trust, Salford Royal Hosp, Dept Rheumatol, Salford, Lancs, England
[43] Univ Pittsburgh, Sch Med, Div Rheumatol & Clin Immunol, Pittsburgh, PA USA
[44] Royal Wolverhampton Hosp NHS Trust, Dept Rheumatol, Wolverhampton WV10 0QP, England
[45] Sandwell & West Birmingham Hosp NHS Trust, City Hosp, Birmingham, W Midlands, England