For citations:
Epikhin A.N., Epikhina U.N., Ushnikova O.A., Ushnikov A.N. On the impact of seasonal solar activity on the progression of retinopathy of prematurity: preliminary research results. Russian Ophthalmological Journal. 2019;12(4):19-27. (In Russ.) https://doi.org/10.21516/2072-0076-2019-12-4-19-27