{"nct_id":"NCT01556451","title":"ZOSTAVAX™ Safety and Immunogenicity in Korean Adults (V211-034)","status":"COMPLETED","status_verified_date":"2017-03","start_date":"2012-04","start_date_type":null,"primary_completion_date":"2012-10","primary_completion_date_type":"ACTUAL","completion_date":"2012-10","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["MRK"]}