Mortality rate during exacerbation episodes of Chronic Obstructive Pulmonary Disease (COPD) in elderly individuals hospitalized at a university institution in the State of Paraná, Brazil. Research, Society and Development, [S. l.], v. 13, n. 1, p. e11913144872, 2024. DOI: 10.33448/rsd-v13i1.44872. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/44872. Acesso em: 28 jun. 2025.