M. S. Todorova, V. T. Tsvetkova, M. A. Atanasova, A. L. Ruseva, and K. N. Todorova, “From Inflammation to Endocrine Dysregulation: Thyroid Hormonal Alterations in COVID-19”, J Endocrinol Metab, vol. 16, no. 2, pp. 70–81, Jan. 2026, doi: 10.14740/jem1625.