Clinical impact of tocilizumab in treatment of severe COVID-19 patients: Retrospective cohort study. Actualizaciones en Sida e Infectología, [S. l.], v. 32, n. 115, 2024. DOI: 10.52226/revista.v32i115.284. Disponível em: https://revista.infectologia.info/index.php/revista/article/view/284. Acesso em: 7 feb. 2026.