{"nct_id":"NCT00454207","title":"Open Label Study of Sildenafil in Patients With Pulmonary Arterial Hypertension","status":"COMPLETED","status_verified_date":"2021-01","start_date":"2007-04","start_date_type":null,"primary_completion_date":"2009-02","primary_completion_date_type":"ACTUAL","completion_date":"2009-02","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["PFE"]}