Results: Mean serum TSH level of patients were higher than those of control group, p<0.05 (3.15±2.28 μUI / mL versus 1.65±0.82 μUI / mL); mean FT3 level of patients were lower than those of control group, p<0.05 (2.42±0.46 pg / mL versus 3.01±0.41 pg / mL); mean FT4 level of patients were lower than those of control group, p>0.05 (1.26±0.24 ng / dL vs 1.18±0.18 ng/dL).