{"nct_id":"NCT01244620","title":"A Pharmacokinetic Drug-Drug Interaction (DDI) Study Between Sitaxsentan And Sildenafil, And Between Sitaxsentan And Tadalafil After Multiple Doses","status":"TERMINATED","status_verified_date":"2011-01","start_date":"2010-11","start_date_type":null,"primary_completion_date":"2010-12","primary_completion_date_type":"ACTUAL","completion_date":"2010-12","completion_date_type":"ACTUAL","phases":["PHASE1"],"tickers":["PFE"]}