[1] Univ Istanbul Cerrahpasa, Cerrahpasa Med Fac, Dept Internal Med, Div Rheumatol, Mah Kocamustafapasa Cad 34 E Fatih, Istanbul, Turkey
[2] Univ Istanbul Cerrahpasa, Cerrahpasa Med Fac, Istanbul, Turkey
[3] Univ Istanbul Cerrahpasa, Cerrahpasa Med Fac, Dept Internal Med, Istanbul, Turkey