Haque, MS, HILR Khan, and RS Mahmud. “Presentation of Atrial Septal Defect (ASD) - Symptoms and Signs”. Journal of Dhaka Medical College 20, no. 1 (September 13, 2011): 9–11. Accessed August 17, 2024. https://banglajol.info/index.php/JDMC/article/view/8564.