{"nct_id":"NCT00986232","title":"ProQuad Dose Selection Study (V221-011)(COMPLETED)","status":"COMPLETED","status_verified_date":"2015-03","start_date":"1999-04","start_date_type":null,"primary_completion_date":"2000-04","primary_completion_date_type":"ACTUAL","completion_date":"2000-09","completion_date_type":"ACTUAL","phases":["PHASE2"],"tickers":["MRK"]}