PERVEZ, N. .; KHAN, S.; KHAN, R. .; KHAN, G. A. . Frequency and determinants of Respiratory Failure in Acute Exacerbation of Chronic Obstructive Pulmonary Disease Patients: A Cross-Sectional Study. BMC Journal of Medical Sciences, [S. l.], v. 5, n. 1, p. 96–99, 2024. DOI: 10.70905/bmcj.05.01.0282. Disponível em: https://mail.bmcjms.org/index.php/bmcj/article/view/282. Acesso em: 24 jan. 2025.