Hassan, MK, KA Hasan, SA Quader, R Sarker, F Ahmed, A Salam, SK Razzaque, Azhari Yakub, and KN Mahmood. 2010. “Ventricular Septal Defect in Children With Down Syndrome - Two Case Reports”. Cardiovascular Journal 3 (1):107-9. https://doi.org/10.3329/cardio.v3i1.6438.