[1] Technion Israel Inst Technol, Rheumatol Unit, Bnai Zion Med Ctr, Haifa, Israel
[2] Technion Israel Inst Technol, Fac Med, Haifa, Israel
[3] Indraprastha Apollo Hosp, Dept Rheumatol, New Delhi, NY, India
[4] Minist Interior Riyadh, Dept Med, Div Rheumatol, Med Cities, Riyadh, Saudi Arabia
[5] Univ Pittsburgh, Med Ctr, Pittsburgh, PA USA
[6] Univ Pittsburgh, Med Ctr, Internal Med, Pittsburgh, PA USA
[7] Univ Pittsburgh, Med Ctr, Div Rheumatol & Clin Immunol, Pittsburgh, PA USA
[8] Univ Pittsburgh, Div Rheumatol & Clin Immunol, Pittsburgh, PA USA