Dar, R. A., Javed, A., Batool, I., Raza, A., Israr, M. U. and Sadiq, R. (2023) “Frequency of Ventricular Septal Defect in Down Syndrome Patients Presenting at a Tertiary Care Hospital”, Annals of Punjab Medical College, 17(1), pp. 102-105. doi: 10.29054/apmc/2023.1278.