3) Feldt-Rasmussen, U. : Long-term varriability in serum thyroglobulin and thyroid related hormones in healthy subjects. Acta Endocrinol., 95 : 328-334, 1980.
4) Feldt-Rasmussen, U. : Influence of thyroid substitution therapy and thyroid autoantibodies on the value of serum thyroglobulin in recurring thyroid cancer. Cancer, 51 : 2240-2244, 1983.