Shabbir, M. M., & Ahmed, W. (2010). COMBINED ATRIAL SEPTAL DEFECT CLOSURE AND PERCUTANEOUS PULMONARY VALVULOPLASTY FOR SECUNDUM ATRIAL SEPTAL DEFECT AND ASSOCIATED PULMONARY VALVULAR STENOSIS: Combined Atrial Septal Defect Closure. Pakistan Armed Forces Medical Journal, 60(2), 314-5. https://www.pafmj.org/PAFMJ/article/view/1820