Fathala, Ahmed, and Alaa Aldurabi. “Frequency of Computed Tomography Abnormalities in Patients With Chronic Thromboembolic Pulmonary Hypertension: A Comparative Study Between Lung Perfusion Scan and Computed Tomography Pulmonary Angiography”. Multidisciplinary Respiratory Medicine 16 (July 2, 2021). Accessed July 4, 2024. https://mrmjournal.org/index.php/mrm/article/view/753.