{"nct_id":"NCT00871000","title":"Immunogenicity and Safety of Boostrix Polio Vaccine as a Booster Dose in 5 to 6-year-old Children.","status":"COMPLETED","status_verified_date":"2017-04","start_date":"2009-04-01","start_date_type":null,"primary_completion_date":"2009-11-18","primary_completion_date_type":"ACTUAL","completion_date":"2009-11-18","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["GSK"]}