Hussain, A. S., Ali, R., Ahmed, S., Naz, F., & Haroon, A. (2017). ORAL SILDENAFIL USE IN NEONATES WITH PERSISTENT PULMONARY HYPERTENSION OF NEWBORN. Journal of Ayub Medical College Abbottabad, 29(4), 677–680. Retrieved from https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/2621