Ambulation capacity, age, immunosuppression, and mechanical ventilation are risk factors of in-hospital death in severe COVID-19: a cohort study. Clinics, [S. l.], v. 77, p. 100075, 2022. DOI: 10.1016/j.clinsp.2022.100075. Disponível em: https://www.revistas.usp.br/clinics/article/view/213515.. Acesso em: 9 may. 2024.