Kurniawan, Debby. “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) 4, no. 2 (September 6, 2020): 252-256. Accessed June 29, 2022. https://journal.uhamka.ac.id/index.php/arkavi/article/view/5547.