“…It is widely believed that immunological disturbances participate in the pathogenesis of hyperthyroidism (5, 19,22). Hyperthyroidism is known to be associated with some other diseases thought to be immunologically induced, such as myasthenia gravis (8,18,21), Addison's disease (2,7,9,15) and pernicious anemia (20,25,28). A similar interrelationship is also illustrated by the association of Addison's disease with pernicious anemia (1,2).…”