Syahputra, Zunaidi, Nizam Akbar, Andre Ketaren, and Harris Hasan. “Posterior to Anterior Mitral Valve Leaflets Length Ratio As a Simple Parameter in Assessing the Severity of Mitral Stenosis”. Indonesian Journal of Cardiology 38, no. 1 (October 30, 2017): 20-9. Accessed May 9, 2026. https://www.ijconline.id/index.php/ijc/article/view/674.