Hematological index in the mild, moderate, severe, and critical groups. Parameters are presented as mean ± SEM; (a) WBC, (b) RBC, (c) Hb, (d) HCT, (e) MCV, (f) MCH, (g) MCHC, (h) PLT, (i) RDW, (j) ESR, (k) hs-CRP, (l) N/L ratio. Significance level is as: *P < 0.05, **P < 0.01, ***P < 0.001