[1] Med Univ Graz, Dept Rheumatol, Graz, Austria
[2] Southend Univ Hosp, Dept Rheumatol, Westcliff On Sea SS0 0RY, Essex, England
[3] London Sch Hyg & Trop Med, Epidemiol & Populat Hlth Fac, London WC1, England
[4] London Sch Hyg & Trop Med, Dept Hlth Serv Res & Policy, London WC1, England
[5] Univ Genoa, Dept Internal Med, Res Lab, I-16126 Genoa, Italy
[6] Acad Div Clin Rheumatol, Genoa, Italy
[7] Univ Leeds, NIHR Leeds Musculoskeletal Biomed Res Unit, Leeds, W Yorkshire, England
[8] Leeds Inst Rheumat & Musculoskeletal Med, Leeds, W Yorkshire, England
[9] Mayo Clin, Dept Rheumatol, Jacksonville, FL 32224 USA
[10] Mil Inst Med, Dept Internal Med & Rheumatol, Warsaw, Poland
[11] Natl Inst Rheumatism & Physiotherapy, Dept Rheumatol 3, Budapest, Hungary
[12] Charite, Dept Rheumatol, D-13353 Berlin, Germany
[13] SUNY Stony Brook, Sch Med, Div Rheumatol Allergy & Immunol, Mineola, NY USA
[14] Timaru Hosp, Dept Rheumatol, Timaru, New Zealand
[15] Univ Barcelona, Hosp Clin, Dept System Autoimmune Dis, Barcelona, Spain
[16] Hosp Southern Norway Trust, Dept Rheumatol, Kristiansand, Norway
[17] Brigham & Womens Hosp, Div Rheumatol, Boston, MA 02115 USA
[18] Med Univ Innsbruck, Dept Internal Med Clin 6, A-6020 Innsbruck, Austria
[19] Polymyalgia Rheumat & Giant Cell Arteritis UK, London, England
[20] Univ Cambridge, Dept Med, Cambridge CB2 2QQ, England
[21] Hosp Univ Pedro Ernesto, Rio De Janeiro, Brazil
[22] Univ KwaZulu Natal, Prince Mshiyeni Mem Hosp, Nelson R Mandela Sch Med, Dept Internal Med, Durban, South Africa
[23] Keele Univ, Arthrit Res UK Primary Care Ctr, Keele ST5 5BG, Staffs, England
[24] Univ Cantabria, Hosp Univ Marques Valdecilla, Fac Med, Serv Reumatol, E-39005 Santander, Spain
[25] Univ Kansas Med Ctr, Dept Med, Div Allergy Clin Immunol & Rheumatol, Kansas City, KS USA
[26] Mayo Clin, Dept Family Med, Rochester, MN USA
[27] Kumamoto Saishunsou Natl Hosp, Clin Res Ctr Rheumat Dis, Dept Rheumatol, Kumamoto, Japan
[28] Sahlgrens Univ Hosp, Dept Rheumatol, S-41345 Gothenburg, Sweden
[29] Azienda Osped IRCCS Reggio Emilia, Dept Internal Med, Div Rheumatol, Reggio Emilia, Italy
[30] Immanuel Krankenhaus Berlin & Med Ctr Rheumatol B, Berlin, Germany
[31] Hosp Special Surg, Dept Med, New York, NY 10021 USA
[32] Mayo Clin, Rochester, MN USA
[33] Univ Fed Sao Paulo, Dept Internal Med, Sao Paulo, Brazil
[34] Mayo Clin, Coll Med, Dept Hlth Sci Res, Div Rheumatol, Rochester, MN USA