Rafi, Mohamed, and Monna Mohamed Jaber. “Study on Prevalence of Left Ventricular Diastolic Dysfunction in Chronic Obstructive Pulmonary Disease”. International Journal of Advances in Medicine 6, no. 2 (March 25, 2019): 222–226. Accessed December 24, 2025. https://www.ijmedicine.com/index.php/ijam/article/view/1606.