Pinna G, Hiedra L, Meinhold H, et al (September 1998). “3,3'-Diiodothyronine concentrations in the sera of patients with nonthyroidal illnesses and brain tumors and of healthy subjects during acute stress”. J. Clin. Endocrinol. Metab.83 (9): 3071–7. doi:10.1210/jc.83.9.3071. PMID9745405.
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Pinna G, Hiedra L, Meinhold H, et al (September 1998). “3,3'-Diiodothyronine concentrations in the sera of patients with nonthyroidal illnesses and brain tumors and of healthy subjects during acute stress”. J. Clin. Endocrinol. Metab.83 (9): 3071–7. doi:10.1210/jc.83.9.3071. PMID9745405.