{"nct_id":"NCT00535418","title":"Optimal Duration of Pre-operative Treatment With Letrozole and to Correlate Clinical Efficacy With Appropriate Surrogate Markers","status":"COMPLETED","status_verified_date":"2017-08","start_date":"2000-06","start_date_type":null,"primary_completion_date":"2002-07","primary_completion_date_type":"ACTUAL","completion_date":null,"completion_date_type":null,"phases":["PHASE2","PHASE3"],"tickers":["NVS"]}