{"nct_id":"NCT00456625","title":"Immune Response to Hepatitis B Vaccine Challenge Dose in Subjects Who Received a Primary Neonatal Hepatitis B Vaccine.","status":"COMPLETED","status_verified_date":"2016-11","start_date":"2007-04","start_date_type":null,"primary_completion_date":"2008-01","primary_completion_date_type":"ACTUAL","completion_date":"2008-01","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["GSK"]}