Nimer, Refat M., Omar F. Khabour, Samer F. Swedan, and Hassan M. Kofahi. 2022. “The Impact of Vitamin and Mineral Supplements Usage Prior to COVID-19 Infection on Disease Severity and Hospitalization”. Biomolecules and Biomedicine 22 (5):826-32. https://doi.org/10.17305/bjbms.2021.7009.