{"nct_id":"NCT02901951","title":"Long-term Persistence of Immunity to Hepatitis B in Adults Vaccinated With GlaxoSmithKline (GSK) Biologicals' Hepatitis B Vaccine (HBV), Engerix-B","status":"COMPLETED","status_verified_date":"2019-12","start_date":"2016-10-11","start_date_type":"ACTUAL","primary_completion_date":"2017-05-01","primary_completion_date_type":"ACTUAL","completion_date":"2017-05-01","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["GSK"]}