Młodożeniec, A., Orłowska-Florek, R., Czarnożycka-Wróbel, A., Gargasz, K., & Gala-Błądzińska, A. (2022). Nonthyroidal illness syndrome as independent predictor of hospital mortality in the elderly hospitalized patients with COVID-19 pneumonia – single-center observation. European Journal of Clinical and Experimental Medicine, 20(3), 348–354. https://doi.org/10.15584/ejcem.2022.3.14