Kurniawan, D. “Relations of Left Atrial Appendage Emptying Flow Velocity to Left Atrial Appendage Thrombus in Mitral Stenosis Patients by Transesophageal Echocardiography Examination ”. ARKAVI [Arsip Kardiovaskular Indonesia), Vol. 4, no. 2, Sept. 2020, pp. 252-6, doi:10.22236/arkavi.v4i2.5547.