Shrestha, A., and R. Shrestha. “Study of Correlation of Left Atrial Size and Atrial Fibrillation in Rheumatic Mitral Valve Disease”. Journal of Nepalgunj Medical College, Vol. 17, no. 2, Dec. 2019, pp. 7-9, doi:10.3126/jngmc.v17i2.28750.