MAHMUD, T. Chronic Obstructive Pulmonary Disease. A Common Disease with Vague Concept among Medicine Trainees. Pakistan Journal of Chest Medicine, [S. l.], v. 18, n. 3, p. 29–33, 2012. Disponível em: https://www.pjcm.net/index.php/pjcm/article/view/101. Acesso em: 4 nov. 2025.