Thu, N.T., Sơn, P.T., Cẩn, Đỗ T. and Lý, N.T.M. 2025. 22. Assessment of right ventricular longitudinal strain by speckle-tracking echocardiography in patients with severe mitral regurgitation due to valve prolapse. Journal of Medical Research. 195, 10 (Oct. 2025), 202-212. DOI:https://doi.org/10.52852/tcncyh.v195i10.4029.