Alfuadi , Rifki Mirza, Anggia Chairuddin Lubis, and Yuke Sarastri-Hilfan Ade Putra. “The Left Atrioventricular Coupling Index As a Predictor of Major Cardiovascular Events in Chronic Heart Failure Patients at Adam Malik Hospital Medan”. Journal of Society Medicine 4, no. 6 (June 30, 2025): 188–196. Accessed August 15, 2025. https://jsocmed.org/index.php/go/article/view/220.