Sirman, Y., N. Preis, and I. Savytskyi. 2021. “Research of Changes in the Level of Endothelin-1 in Experimental Diabetic Retinopathy. Comparison of Methods of Correction”. Journal of Education, Health and Sport 11 (10):411-22. https://doi.org/10.12775/JEHS.2021.11.10.038.