Figure 2. Results of publication bias and trim and fill method. (A) Gender-male; (B) Fever; (C) Cough; (D) Diabetes; (E) Hypertension; (F) Malignancies; (G) COPD; (H) Cardiovascular disease; (I) Cerebrovascular disease; (J) Chronic renal disease; (K) Age; (L) CRP; (M) D-dimer.