2022. COMPARISON OF THE EFFECT OF SILDENAFIL AND TADALAFIL ON PULMONARY HYPERTENSION ASSOCIATED WITH HEMODYNAMICALLY SIGNIFICANT PDAS TREATMENT OF PULMONARY HYPERTENSION IN HS-PDA PATIENTS. Journal of Pharmaceutical Negative Results. (Dec. 2022), 3266–3274. DOI:https://doi.org/10.47750/pnr.2022.13.S08.401.