Siddiqui, Maria Fareed, Sehar Farooq, Amna Komal Khan, and Humera Kausar. 2021. “Congenital Heart Disease: Causes and Risk Factors: Congenital Heart Disease: Causes and Risk Factors”. Pakistan BioMedical Journal 4 (1). https://doi.org/10.52229/pbmj.v4i1.58.