{"nct_id":"NCT00662558","title":"A Six Week Study Of The Pain Relieving Effects Of Celecoxib 200 Mg Twice Daily Compared To Tramadol 50 Mg Four Times Daily In Patients With Chronic Low Back Pain","status":"COMPLETED","status_verified_date":"2021-01","start_date":"2008-01","start_date_type":null,"primary_completion_date":"2008-09","primary_completion_date_type":"ACTUAL","completion_date":"2008-09","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["PFE"]}