{"nct_id":"NCT00440531","title":"Study of Recombinant Modified Process Hepatitis B Vaccine in Older Adults (V232-059)(COMPLETED)","status":"COMPLETED","status_verified_date":"2017-03","start_date":"2006-11","start_date_type":null,"primary_completion_date":"2007-11","primary_completion_date_type":"ACTUAL","completion_date":"2007-11","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["MRK"]}