Spichak, I.V., Zhirova, I.V., Podgaina, M.V., Korzh, Y.V. and Ivashchenkova, A.O. 2021. Comparative analysis of current health expenditure and mortality from COVID-19 by countries. AVFT – Archivos Venezolanos de Farmacología y Terapéutica. 39, 5 (Feb. 2021).