C. Coelho-Oliveira, Ana, Bruno B. Monteiro-Oliveira, Rebeca B. M. Cavalcante, Daniel B. Santos, Anelise Sonza, Danúbia C. de Sá-Caputo, and Mario Bernardo-Filho. “Vitamin D Levels and Risk of COVID-19 Infection: A Systematic Review”. Brazilian Journal of Health and Biomedical Sciences 19, no. 2 (January 4, 2021): 83–90. Accessed October 11, 2024. https://bjhbs.hupe.uerj.br/bjhbs/article/view/73.