Kryzhevskyi, Yevhenii, et al. “Study of New Pathogenetic Mechanisms of Diabetic Retinopathy Development in Patients With Diabetic Foot Syndrome”. Journal of Education, Health and Sport, vol. 11, no. 4, Apr. 2021, pp. 233-46, doi:10.12775/JEHS.2021.11.04.024.