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Coronary heart disease and atrial fibrillation

microsomes were seen in two patients and increased concentrations of antibodies to thyroglobulin in one. Table 1 shows the mean concentrations in both groups of patients. Thyroid hormone concentrations were below the normal range in only one patient positive for hepatitis C virus, and in this patient thyroid autoantibodies were not detectable. We conclude that in patients with Hashimoto's thyroiditis the prevalence of hepatitis C virus is only slightly increased and the prevalence of hepatitis A and B viruses is not increased. Raised thyroid antibody concentrations, as seen in some patients with hepatitis C, may reflect a non-specific immune reaction or susceptibility to other autoimmune diseases.