Younas M, Beg A, Chaudhry TA. IMMEDIATE OUTCOME AFTER PERCUTANEOUS DEVICE CLOSURE OF SECUNDUM ATRIAL SEPTAL DEFECT. Pak Heart J [Internet]. 2020Jul.20 [cited 2024Nov.24];53(2). Available from: https://pakheartjournal1.pcs.org.pk/index.php/pk/article/view/1857