Unsal, V.; Sabancilar, I. .; Ozbek, E. .; Mermutluoglu, C. .; Temiz, H. . Role of Vitamin D, Folic Acid, Ferritin, Inflammation and Oxidative Stress in the Pathogenesis of COVID-19. Progr Nutr 2022, 24 (4), e2022126. https://doi.org/10.23751/pn.v24i4.12306.