CRP and familial Mediterranean fever: Patients with FMF had more gastrointestinal tract and renal involvement, higher PVAS score, higher C-reactive protein levels, and higher need for steroids, cyclophosphamide, and intravenous immunoglobulin (p = 0.01, p = 0.03, p < 0.001, p < 0.001, p = 0.04, p < 0.001, p = 0.01, respectively).