Zeb, S., L. Aurangzeb, Z. Mehmood, A. Basit, and Z. Ikhtiar. “Epidemiology and Clinical Outcomes of Pulmonary Hypertension: A Cross-Sectional Study at Lady Reading Hospital, Peshawar”. Pakistan Journal of Chest Medicine, vol. 30, no. 3, Sept. 2024, pp. 310-9, https://www.pjcm.net/index.php/pjcm/article/view/938.