{"nct_id":"NCT04540393","title":"AZD1222 Vaccine for the Prevention of COVID-19","status":"WITHDRAWN","status_verified_date":"2021-09","start_date":"2020-09-02","start_date_type":"ACTUAL","primary_completion_date":"2020-12-04","primary_completion_date_type":"ESTIMATED","completion_date":"2022-05-11","completion_date_type":"ESTIMATED","phases":["PHASE3"],"tickers":["AZN"]}