Diagnosis, results and nursing interventions for the frail elderly, affected by COVID-19: a documentary analysis. Research, Society and Development, [S. l.], v. 9, n. 9, p. e239997109, 2020. DOI: 10.33448/rsd-v9i9.7109. Disponível em: https://rsdjournal.org/rsd/article/view/7109. Acesso em: 5 dec. 2025.