[1] La Paz Univ Hosp, IdiPaz, Rheumatol, Madrid, Spain
[2] Care & Publ Hlth Res Inst CAPHRI, Rheumatol, Maastricht, Netherlands
[3] Tel Aviv Sourasky Med Ctr, Rheumatol, Tel Aviv, Israel
[4] Leiden Univ, Rheumatol, Med Ctr, Leiden, Netherlands
[5] Univ Amsterdam, Amsterdam Univ, Rheumatol & Clin Immunol, Med Ctr, Amsterdam, Netherlands
[6] Charite, Berlin, Netherlands
[7] German Rheumatism Res Ctr, Rheumatol, Berlin, Netherlands
[8] Maastricht Univ, Rheumatol, Med Ctr, Maastricht, Netherlands
[9] Ruhr Univ Bochum, Rheumazentrum Ruhrgebiet Herne, Rheumatol, Bochum, Herne, Germany
[10] Univ Ghent, VIB Ctr Inflammat Res, Ghent, Belgium
[11] Univ Ghent, Dept Internal Med & Pediat, Ghent, Belgium
[12] Univ Calif San Francisco, Dept Med, Div Rheumatol, San Francisco, CA USA
[13] Univ Cordoba, Reina Sofia Univ Hosp, IMIBIC, Rheumatol, Cordoba, Spain
[14] Univ Leeds, Leeds Teaching Hosp Trust, NIHR Leeds Biomed Res Ctr, Leeds, W Yorkshire, England
[15] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Rheumatol, Leeds, W Yorkshire, England
[16] Cochin Hosp, AP HP, Rheumatol, Paris, France
[17] Hosp Avellaneda, Rheumatol, San Miguel De Tucuman, Argentina
[18] Univ Bielefeld, Klinikum Bielefeld, Internal Med & Rheumatol, Bielefeld, Germany
[19] Univ Amsterdam, Med Ctr Rheumatol & Clin Immunol, Amsterdam, Netherlands
[20] Royal Natl Hosp Rheumat Dis, Rheumatol, Bath, Avon, England
[21] Practice Buchsbaum, Rheumatol, Schaffhausen, Switzerland