Putienko, A.A., and Elhage Emhamed Ali Abdalslam Emhamed. 2026. “Findings of a Study of Pigment Epithelium-Derived Factor (PEDF) Levels in Vitreous Samples from Patients With Proliferative Diabetic Retinopathy”. Ukrainian Journal of Ophthalmology, no. 3 (June). Odesa, Ukraine:36-40. https://doi.org/10.31288/oftalmolzh201633640.