1. Arango, G., Mayberry, W. E., Hockert, T. J. and Elveback, L. R. 1968. Total and free human serum thyroxine in normal and abnormal thyroid states. Mayo Clin. Proc. 43, 503.
2. Bellabarba, D., Inada, M., Varsano-Aharon, N. and Sterling, K. 1968. Thyroxine transport and turnover in major non-thyroidal illness. J. Clin. Endocrin. 28, 1023.
3. Bermudez, F., Surks, M. I. and Oppenheimer, J. H. 1975. High incidence of decreased serum triiodothyronine concentrations in patients with non-thyroidal disease. J. Clin. Endocrin. Metab. 41, 27.
4. Black, E. G., Griffiths, R. S., Finucane, J. and Hoffenberg, R. 1975. The Radioimmunoassay of T3 and T4 in Serum and Urine. In Proceedings of the International Conference on Thyroid Hormone Metabolism, Ed. Harland, W. A. and Orr. J. S. Academic Press.
5. Black, E., Griffiths, S., Hoffenberg, R. and Leatherdale, B. 1973. Measurement of urinary thyroxine. Lancet i, 152.