[1] Ruhr Univ Bochum, Rheumazentrum Ruhrgebiet, Rheumatol, D-44801 Herne, Germany
[2] AMC, Amsterdam Rheumatol Ctr, Amsterdam, Netherlands
[3] Zuyderland MC, Rheumatol, Heerlen, Netherlands
[4] Leiden Univ, Med Ctr, Rheumatol, Leiden, Netherlands
[5] Klinikum Bielefeld Rosenhohe, Internal Med & Rheumatol, Bielefeld, Germany
[6] David Geffen Sch Med, Dept Med, Div Rheumatol, Los Angeles, CA USA
[7] Celal Bayar Univ, Sch Med, Dept Med, Div Rheumatol, Manisa, Turkey
[8] Maastrich Univ, Med Ctr, Div Rheumatol, Internal Med, Maastricht, Netherlands
[9] CAPHRI, Maastricht, Netherlands
[10] Ghent Univ Hosp, Rheumatol, Ghent, Belgium
[11] VIB Inflammat Res Ctr, Ghent, Belgium
[12] Univ Paris 05, Hop Cochin, Rheumatol, Paris, France
[13] PRES Sorbonne Paris Cite, INSERM, U1153 Epidemiol Clin & Biostat, Paris, France
[14] Sorbonne Univ, iPLESP, UMR S 1136, Paris, France
[15] Hop Univ Pitie Salpetriere, APHP, Dept Rheumatol, Paris, France
[16] UCL, MRC Ctr Neuromuscular Dis, London, England
[17] UCL, Ctr Rheumatol, Rheumatol, London, England
[18] Leeds Teaching Hosp Trust, NIHR Leeds Biomed Res Ctr, Leeds, W Yorkshire, England
[19] Univ Leeds, Fac Med & Hlth, Leeds Inst Rheumat & Musculoskeletal Dis, Leeds, W Yorkshire, England
[20] Hop Cochin, Rheumatol, Paris, France
[21] Univ Hosp La Paz, IdiPaz, Dept Rheumatol, Madrid, Spain
[22] Zurich Univ Appl Sci, Inst Physiotherapy, Sch Hlth Profess, Winterthur, Switzerland
[23] Univ Sao Paulo, Fac Med, Sao Paulo, Brazil
[24] Univ Sao Paulo, Fac Med, Hosp Clin, Sao Paulo, Brazil
[25] Technion, Bnai Zion Med Ctr, Dept Internal Med A, Haifa, Israel
[26] Univ Ghent, Fac Med & Hlth Sci, Dept Internal Med & Pediat, Ghent, Belgium
[27] Reade, Ctr Rehabil & Rheumatol, Amsterdam, Netherlands