Alfuadi , R. M., Lubis , A. C., & Ade Putra , Y. S.-H. (2025). 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(6), 188–196. https://doi.org/10.71197/jsocmed.v4i6.220