Clinical Characteristics and Risk Factors Associated with COVID-19 Mortality: A Retrospective Study. African Journal of Biomedical Research, [S. l.], v. 27, n. 3S, p. 5155–5162, 2024. DOI: 10.53555/AJBR.v27i3S.3289. Disponível em: https://africanjournalofbiomedicalresearch.com/index.php/AJBR/article/view/3289.. Acesso em: 17 jun. 2025.