1. Nontoxic goiter;Henneman;J Clin Endocrinol Metab,1979
2. The epidemiology of thyroid disease;Tunbridge,1986
3. The prevalence of thyroid disorders in a middle-aged population, with special reference to the solitary thyroid nodule;Christensen;Acta Chir Scand,1984
4. Aetiology of simple goiter;Thomas;J Clin Endocrinol Metab,1988
5. Simple and nodular sporadic goiter;Studer,1986