Vitamin D Deficiency and Hashimoto’s Thyroiditis in Children and Adolescents: a Critical Vitamin D Level for This Association? ABSTRACT Objective: Vitamin D has been suggested to be active as an immunomodulator in autoimmune diseases such as Hashimoto’s thyroiditis (HT). The goal of the present study was to investigate the vitamin D status in HT patients. Methods: This prevalence case-control...