“A STUDY OF LEFT ATRIAL APPENDAGE FLOW BY DOPPLERTRANSESOPHAGEAL ECHOCARDIOGRAPHY IN PATIENTS WITHATRIAL SEPTAL DEFECT”. Al-Nahrain Journal of Science 12, no. 1 (March 1, 2009): 52–60. Accessed April 15, 2025. https://anjs.edu.iq/index.php/anjs/article/view/1262.