Komaria, K., Halim R, A., Nst, A. and Hasan, H. (2017) “Predictor of Left Atrial Spontaneous Echocardiographic Contrast in Rheumatic Mitral Stenosis Patients”, Indonesian Journal of Cardiology, 38(3), pp. 168-178. doi: 10.30701/ijc.v38i3.780.