Figure legends:
Figure 1: Flow-chart of patient recruitment process
Figure 2: The correlation analyses between CG versus (vs.) serum IgG (mg/dl) (A) and CG vs. total immunoglobulin (mg/dl) (B). The correlation analyses between gamma globulin vs. total immunoglobin (mg/dl) (C) and gamma globulin vs. serum IgG (mg/dl) (D).
Figure 3: ROC curve analyses to verify if CG (A) and gamma globulin (B) were independent discriminative values to detect subjects with IgG serum levels lower than 600, 500, 400 and 300 mg/dl. AUC: Area under curve, CI: Confidence interval