SULEMAN, A.; ABDULLAH, A.; ULLAH, R.; NISAR, H.; IQBAL, Z.; NAZ, S.; MAQSOOD, S. Frequency of Pulmonary Hypertension in Chronic Obstructive Pulmonary Disease Patients. Pakistan Journal of Chest Medicine, [S. l.], v. 23, n. 4, p. 151–55, 2018. Disponível em: https://pjcm.net/index.php/pjcm/article/view/484. Acesso em: 16 jan. 2026.