Maad Ullah, Nadeem Sadiq and Amjad Mahmood (2016) “TRANSCATHETER CLOSURE OF SECUNDUM ATRIAL SEPTAL DEFECT WITH LARGEST FENESTRATED DEVICE”, Pakistan Armed Forces Medical Journal, 66(SUPPL-1), pp. S225–27. Available at: https://pafmj.org/PAFMJ/article/view/11810 (Accessed: 4 October 2025).