Siddiqui MF, Farooq S, Khan AK, Kausar H. Congenital Heart Disease: Causes and Risk Factors: Congenital Heart Disease: Causes and Risk Factors. PBMJ [Internet]. 2021 Jun. 30 [cited 2024 Nov. 22];4(1). Available from: https://pakistanbmj.com/journal/index.php/pbmj/article/view/58