[1] Hop Lariboisiere, AP HP, Serv Rhumatol, F-75010 Paris, France
[2] Hop Lariboisiere, INSERM, UMR1132, F-75010 Paris, France
[3] Univ Paris Diderot, Sorbonne Paris Cite, F-75205 Paris, France
[4] Univ Nottingham, Acad Rheumatol, Nottingham, England
[5] Hosp Gen Univ Alicante, Dept Rheumatol, Alicante, Spain
[6] Inst Rheumatol RAMS, Moscow, Russia
[7] Univ Lausanne Hosp, Dept Diagnost & Intervent Radiol, Lausanne, Switzerland
[8] Hop Bichat Claude Bernard, AP HP, Dept Epiehmiol & Rech Clin, Paris, France
[9] Ctr Pharmacoepiehmiol, Paris, France
[10] Univ Paris Diderot, Paris, France
[11] INSERM, UMR ECEVE 1123, Paris, France
[12] Patient Nottingham, UK, Paris, France
[13] VieCuri Med Ctr, Dept Rheumatol, Venlo, Netherlands
[14] Radboud UMC, Sci IQ HealthCare, Nijmegen, Netherlands
[15] Radboud Univ Nijmegen, Dept Primary & Community Care, Med Ctr, Nijmegen, Netherlands
[16] Keele Univ, Arthrit Res UK Primary Care Ctr, Keele, Staffs, England
[17] Univ Edinburgh, Osteoarticular Res Grp, Edinburgh, Midlothian, Scotland
[18] Hosp Cruces, Secc Rheumatol, Baracaldo, Spain
[19] Clin Coracao Jesus, Rheumatol Unit, Lisbon, Portugal
[20] Univ Padua, Rheumatol Unit, Padua, Italy
[21] CHU Vaudois, Serv Rhumatol, Lausanne, Switzerland
[22] Univ Lausanne, Lausanne, Switzerland
[23] Tech Univ Dresden, Dept Rheumatol, Univ Clin, Dresden, Germany
[24] Diakonhjemmet Hosp, Dept Rheumatol, Oslo, Norway
[25] Charles Univ Prague, Fac Med 1, Inst Rheumatol, Prague, Czech Republic
[26] Charles Univ Prague, Fac Med 1, Dept Rheumatol, Prague, Czech Republic