Ryanti, Dina, Andre Pasha Ketaren, Zulfikri Mukhtar, Nizam Zikri Akbar, Anggia Chairuddin Lubis, and Tengku Winda Ardini. “Correlation Between Peak Left Atrial Longitudinal Strain and The Severity of Mitral Valve Disease at Haji Adam Malik General Hospital Medan”. Indonesian Journal of Cardiology 44, no. 2 (March 29, 2024): 68–74. Accessed October 16, 2026. http://ijconline.id/index.php/ijc/article/view/1541.