Free thyroid hormones and a third-generation TSH assay in the detection of hyperthyroidism during long-term thyroxine treatment in thyroid carcinoma patients. - Taimela,E.; Koskinen,P.; Nuutila,P.; Nikkanen,V.; Saraste,M.; Taimela,S.; Irjala,K. (Scand J Clin Lab Invest, 1995)