{"nct_id":"NCT00985166","title":"A Study of ProQuad in Healthy 4 to 6 Year Old Children (V221-014)","status":"COMPLETED","status_verified_date":"2015-07","start_date":"2000-08","start_date_type":null,"primary_completion_date":"2002-05","primary_completion_date_type":"ACTUAL","completion_date":"2003-05","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["MRK"]}