{"nct_id":"NCT00290901","title":"Celebrex vs Tramadol in the Treatment of Chronic Lower Back Pain.","status":"COMPLETED","status_verified_date":"2021-03","start_date":"2006-03","start_date_type":null,"primary_completion_date":"2006-12","primary_completion_date_type":"ACTUAL","completion_date":null,"completion_date_type":null,"phases":["PHASE4"],"tickers":["PFE"]}