{"nct_id":"NCT00559143","title":"Biventricular Alternative Pacing","status":"WITHDRAWN","status_verified_date":"2011-06","start_date":"2007-11","start_date_type":null,"primary_completion_date":"2009-11","primary_completion_date_type":"ESTIMATED","completion_date":"2011-07","completion_date_type":"ESTIMATED","phases":["PHASE4"],"tickers":["MDT"]}