Hutsaliuk, K. M., et al. “Retinal Changes As Evidenced by Fundoscopy and Their Frequencies in Patients With COVID-19 With Different Variants of the Angiotensin-Converting Enzyme Gene”. Journal of Ophthalmology (Ukraine), no. 1, Feb. 2024, pp. 54-60, doi:10.31288/oftalmolzh202415460.