HP and cyclic hematopoiesis: In patients with CH, there were strong positive correlations between zonulin levels and age (r=0.475, p=0.008), weight (r=0.707, p<0.001), weight SDS (r=0.532, p=0.002), BMI (r=0.872, p<0.001), BMI-SDS (r=0.681, p<0.001) and levothyroxine dose (r=0.485, p=0.007).