[1] Med Univ Bialystok, Dept Rheumatol & Internal Med, Ul M Sklodowskiej Curie 24A, PL-15276 Bialystok, Poland
[2] Radboud Univ Nijmegen, Med Ctr, Nijmegen, Netherlands
[3] Paris Descartes Univ, Cochin Hosp, Rheumatol Dept A, Paris, France
[4] Univ Hosp Charite, Berlin, Germany
[5] Univ Hosp Zurich, Zurich, Switzerland
[6] Univ Calif Los Angeles, Los Angeles, CA USA
[7] Univ Genoa, IRCCS AOU San Martino, Res Labs, Genoa, Italy
[8] Univ Genoa, IRCCS AOU San Martino, Clin Div Rheumatol, Dept Internal Med, Genoa, Italy
[9] Univ Pecs, Dept Rheumatol & Immunol, Med Ctr, Pecs, Hungary
[10] Univ Belgrade, Belgrade, Serbia
[11] Univ Leeds, Leeds, W Yorkshire, England
[12] UCL, London, England
[13] Univ Erlangen Nurnberg, Erlangen, Germany
[14] Hamburg Ctr Pediat & Adolescence Rheumatol, Hamburg, Germany
[15] FESCA, London, England
[16] Univ Giessen, Bad Nauheim, Germany
[17] Univ Florence, Florence, Italy
[18] Univ Cologne, Cologne, Germany
[19] Univ Michigan, Sch Med, Ann Arbor, MI USA
[20] Univ Manchester, Salford Royal NHS Fdn Trust, Manchester Acad Hlth Sci Ctr, Manchester, Lancs, England
[21] Cent Manchester NHS Fdn Trust, NIHR Manchester Musculoskeletal Biomed Res Unit, Manchester, Lancs, England
[22] Univ Med Ctr Utrecht, Dept Rheumatol & Clin Immunol, Utrecht, Netherlands
[23] Univ Lubeck, Lubeck, Germany
[24] Med Univ South Carolina, Charleston, SC USA
[25] Univ Ghent, Ghent Univ Hosp, Ghent, Belgium
[26] Basel Univ, Basel, Switzerland
[27] FESCA Patient Res Partner, Ede, Netherlands
[28] Johns Hopkins Univ, Baltimore, MD USA
[29] Univ Naples 2, Naples, Italy
[30] Univ Padua, Padua, Italy