COMPARISON OF THE EFFECT OF SILDENAFIL AND TADALAFIL ON PULMONARY HYPERTENSION ASSOCIATED WITH HEMODYNAMICALLY SIGNIFICANT PDAS TREATMENT OF PULMONARY HYPERTENSION IN HS-PDA PATIENTS. (2022). Journal of Pharmaceutical Negative Results, 3266-3274. https://www.pnrjournal.com/index.php/home/article/view/4563