AHMAD, W. .; KHAN, S. .; SHAHZAD, M. . Small Airways Dysfunction and Neutrophilic Inflammation in Acute COPD Exacerbations: A Cross-Sectional Study. Pakistan Journal of Chest Medicine, [S. l.], v. 31, n. 4, p. 335–345, 2025. Disponível em: https://mail.pjcm.net/index.php/pjcm/article/view/1076. Acesso em: 6 aug. 2026.