[1] Cyprus League Rheumatism, Nicosia, Cyprus
[2] Hosp Gen Univ Alacant, Alacant, Spain
[3] Hosp Univ Mostoles, Mostoles, Spain
[4] Hosp Univ Fdn Jimenez Diaz, Madrid, Spain
[5] Rigshosp, Copenhagen, Denmark
[6] Bispebjerg & Frederiksberg Hosp, Copenhagen, Denmark
[7] Univ Leeds, Leeds, W Yorkshire, England
[8] Inst Poal Reumatol, Barcelona, Spain
[9] Univ Paris Saclay Versailles, AP HP, INSERM, Boulogne, France
[10] Nukl Med Spitalerhof, Rad Allianz, Hamburg, Germany
[11] Univ Manchester, Manchester, Lancs, England
[12] Univ Nottingham, Nottingham, England
[13] Sorbonne Univ, Mikayelyan Univ Hosp, INSERM, Paris, France
[14] Mikayelyan Univ Hosp, Yerevan, Armenia
[15] Kings Coll London, London, England
[16] Hosp Univ Princesa, Madrid, Spain
[17] Hosp Clin Barcelona, Barcelona, Spain
[18] InMusc, Madrid, Spain