An Observational Study of Risk Factors for SARS-CoV 2 Infection in Patients with Cancer. European Journal of Clinical Medicine, [S. l.], v. 4, n. 5, p. 5–10, 2023. DOI: 10.24018/clinicmed.2023.4.5.254. Disponível em: https://www.ej-clinicmed.org/index.php/clinicmed/article/view/254. Acesso em: 19 nov. 2025.