H. Z. U. R. Malik, M. Shahzad, J. Younus, M. Riaz, F. Haron, and B. Tariq, “Comparative Efficacy of Low Dose vs High Dose Sildenafil in Treatment of Pulmonary Hypertension in Neonates”, IJBR, vol. 3, no. 6, pp. 1088–1092, Jun. 2025, doi: 10.70749/ijbr.v3i6.2310.