{"nct_id":"NCT01323959","title":"Immunogenicity and Safety of Booster Dose of BoostrixTM Polio Vaccine in Previously Boosted Adults","status":"COMPLETED","status_verified_date":"2017-04","start_date":"2011-04-01","start_date_type":null,"primary_completion_date":"2012-03-01","primary_completion_date_type":"ACTUAL","completion_date":"2012-03-01","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["GSK"]}