Effects of GA on liver function (^a)significant difference from baseline). (A) Effects of GA on direct bilirubin level (P=0.008). (B) Effects of GA on total bilirubin level (P=0.590). (C) Effects of GA on serum albumin level (P=0.186). (D) Effects of GA on total proteins level (P=0.155). ^b)Indicate outliers' value.