{"nct_id":"NCT01138098","title":"Evaluation of Antibody Persistence and Immune Memory Against the Hepatitis B Antigen in Previously Vaccinated Children","status":"COMPLETED","status_verified_date":"2016-09","start_date":"2010-06-07","start_date_type":null,"primary_completion_date":"2010-11-26","primary_completion_date_type":"ACTUAL","completion_date":"2010-11-26","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["GSK"]}