Alex Neves da Silva, P. (2023) “Severe Acute Respiratory Syndrome caused by New Coronavirus (COVID-19) and influenza viruses in Brazil: Descriptive analytical observational retrospective study”, Seven Editora [Preprint]. Disponível em: https://sevenpubl.com.br/editora/article/view/1002 (Acesso em: 7 outubro 2025).