Robert F, Amabebe E, Agbalalah T, Orubu E. Nutritional Perspectives to Coronavirus Disease 2019 (COVID-19) Susceptibility and Severity: a review of the roles of vitamin D and C. NDJMS. 2021;3(2):7-20. Accessed December 31, 2025. https://ndjms.ndu.edu.ng/index.php/home/article/view/54