For citations:
Sychev I.N., Matveev A.V., Sychev D.A. Current and future use of vitamin D3 in patients with COVID-19. Kachestvennaya Klinicheskaya Praktika = Good Clinical Practice. 2020;(4S):87-89. (In Russ.) https://doi.org/10.37489/2588-0519-2020-S4-87-89