A Long Term Extension Study Evaluating Safety Of Sildenafil Citrate When Used To Treat Pulmonary Arterial Hypertension (PAH) In Children
Conditions
- Pulmonary Arterial Hypertension
Interventions
- DRUG: Sildenafil citrate
- DRUG: Sildenafil citrate
- DRUG: Sildenafil citrate
Sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.