{"nct_id":"NCT02798952","title":"A Study to Evaluate Persistence of Hepatitis B Antibodies, Immunogenicity and Safety of Engerix™-B Kinder Challenge Dose, in Adolescents Vaccinated With Four Doses of Infanrix™ Hexa During Infancy","status":"COMPLETED","status_verified_date":"2020-01","start_date":"2016-08-23","start_date_type":"ACTUAL","primary_completion_date":"2017-07-05","primary_completion_date_type":"ACTUAL","completion_date":"2017-07-05","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["GSK"]}