Fatema, Nurun Nahar. 2009. “Closure of Large Patent Ductus Arteriosus in a Patient With Severe Pulmonary Hypertention by Amplatzer Septal Occluder (ASO) - A Case Report”. Journal of Armed Forces Medical College, Bangladesh 5 (1):46-48. https://doi.org/10.3329/jafmc.v5i1.2852.