Werner SC, Ingbar SH, Braverman LE, et al. Subclinical thyrotoxicosis. In: Braverman LE, Utiger RD, et al., eds. Werner and Ingbar’s The thyroid: a fundamental and clinical text.7th ed. Lippincott Williams & Wilkins.1996. p. 460.
Hollowell JG, Staehling NW, Flanders WD, et al. Serum TSH, T4, and thyroid antibodies in the United States population (1988 to 1994): National Health and Nutrition Examination Survey (NHANES III). J Clin Endocrinol Metab 2002; 87: 489.
Laurberg P, Pedersen K, Hreidarsson A, et al. Iodine intake and the pattern of thyroid disorders: a comparative epidemiological study of thyroid abnormalities in the elderly in Iceland and in Jutland, Denmark. J Clin Endocrinol Metab 1998; 83: 765.
Tenerz A, Forberg R, Jansson R. Is a more active attitude warranted in patients with subclinical thyrotoxicosis? J Intern Med 1990; 228: 229.