[1] St Joseph Med Univ, Rheumatol Dept, Beirut, Lebanon
[2] Hotel Dieu France Hosp, Rheumatol Dept, Alfred Naccache Blvd Achrafieh, Beirut, Lebanon
[3] Temara Hosp, Rheumatol Unit, Lab Biostat, Clin Res & Epidemiol LBRCE, Rabat, Morocco
[4] Mohammed V Univ, Fac Med & Pharm, Rabat, Morocco
[5] Specialized Med Ctr, Dept Internal Med, Rheumatol Div, Riyadh, Saudi Arabia
[6] St Joseph Med Univ, Med Dept, Fac Med, Beirut, Lebanon
[7] Univ Baghdad, Coll Med, Dept Med, Rheumatol Unit, Baghdad, Iraq
[8] Jaber Alahmed Alsabah Hosp, Dept Med, Rheumatol Unit, Kuwait, Kuwait
[9] Cairo Univ, Rheumatol Dept, Cairo, Egypt
[10] Mohamed Lamine Debaghine Univ Hosp, Rheumatolol Dept, Algiers, Algeria
[11] Tunis El Manar Univ, Fac Med Tunis, Kassab Inst Orthoped, Rheumatol Dept,UR17SP04, Tunis, Tunisia
[12] Hamad Med Corp, Rheumatol Dept, Doha, Qatar
[13] King Faisal Specialist Hosp & Res Ctr, Rheumatol Dept, Jeddah, Saudi Arabia
[14] Tawam Hosp, Rheumatol Dept, Al Ain, U Arab Emirates
[15] UAE Univ, Coll Med & Hlth Sci, Dept Internal Med, Al Ain, U Arab Emirates
[16] Makassed Hosp, Rheumatol Dept, East Jerusalem, Palestine
[17] Tripoli Children Hosp, Rheumatol Dept, Tripoli, Libya
[18] Univ Tripoli, Rheumatol Dept, Tripoli, Libya
[19] Cadi Ayyd Univ, Avicenne Mil Hosp, Rheumatol Dept, Marrakech, Morocco
[20] Douera Hosp, Fac Med, Rheumatol Dept, Saad Dahlab, Blida, Algeria
[21] Teshreen Hosp, Rheumatol Dept, Damascus, Syria
[22] Syrian Med Assoc, Damascus, Syria
[23] Assiut Univ, Rheumatol Dept, Asyut, Egypt
[24] King Hamad Univ Hosp, Rheumatol Dept, Bahrain, Bahrain
[25] Value Res, Dubai, U Arab Emirates
[26] Jordan Hosp, Internal Med Dept, Rheumatol Div, Amman, Jordan