highly significantP < 0.001
Single, double, and triple asterisks indicate differences that are statistically significant ( P < 0.05 or P < 0.01) or highly significant ( P < 0.001), respectively.
Single, double, and triple asterisks indicate differences that are statistically significant ( P < 0.05 or P < 0.01) or highly significant ( P < 0.001), respectively.