Berikashvili, L. B., A. V. Geize, R. A. Kornelyuk, and G. P. Plotnikov. “Immune Status in Chronic Critical Illness: A Systematic Review”. Annals of Critical Care, no. 1, Jan. 2023, pp. 133-44, https://doi.org/10.21320/1818-474X-2023-1-133-144.