Hussain, A. S. (2017) “ORAL SILDENAFIL USE IN NEONATES WITH PERSISTENT PULMONARY HYPERTENSION OF NEWBORN”, Journal of Ayub Medical College Abbottabad, 29(4), pp. 677–680. Available at: https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/2621 (Accessed: 3 May 2025).