Prognostic factors for SARS-CoV-2 nasopharyngeal swab negativity: a multicentric study. Italian Journal of Medicine, [S. l.], v. 16, n. 1, 2022. DOI: 10.4081/itjm.2022.1552. Disponível em: https://www.italjmed.org/ijm/article/view/1552. Acesso em: 23 jul. 2025.