Abimanyu, R., Ketaren, A. P. and Nasution, A. N. (2025) “Relationship Between Left Atrium Reservoir Strain and One-Year Mortality After Surgery in Patients with Severe Primary Mitral Regurgitation Undergoing Mitral Valve Replacement at Haji Adam Malik General Hospital, Medan”, Journal of Society Medicine, 4(2), pp. 60–69. doi: 10.71197/jsocmed.v4i2.200.