Fatema, NN, H Rashid, and AK Azad. 2010. “Device Closure of Perimembranous Ventricular Septal Defect Under Deep Sedation and Transthoracic Echo Guide: A Case Report”. Cardiovascular Journal 3 (1):89-91. https://doi.org/10.3329/cardio.v3i1.6432.