Oemar, H, K Yusoff, and HB Abdulgani. “Chronic Mitral Regurgitation: When the Optimal Timing of Surgical Intervention?”. Cardiovascular Journal 1, no. 2 (August 8, 2011): 142–147. Accessed July 18, 2024. https://banglajol.info/index.php/CARDIO/article/view/8120.