{"nct_id":"NCT00205894","title":"Occipital Nerve Stimulation to Treat Chronic Headaches","status":"COMPLETED","status_verified_date":"2008-08","start_date":"2004-01","start_date_type":null,"primary_completion_date":"2006-10","primary_completion_date_type":"ACTUAL","completion_date":"2007-09","completion_date_type":"ACTUAL","phases":["PHASE1","PHASE2"],"tickers":["BSX"]}