{"nct_id":"NCT00649090","title":"A Study to Evaluate the Safety of Adjuvant Treatment With Exemestane Following Previous Treatment With Tamoxifen in Postmenopausal Women With Estrogen Sensitive Primary Breast Cancer","status":"COMPLETED","status_verified_date":"2008-09","start_date":"2005-03","start_date_type":null,"primary_completion_date":"2007-04","primary_completion_date_type":"ACTUAL","completion_date":"2007-04","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["PFE"]}