{"nct_id":"NCT00156741","title":"Efficacy of a Pacemaker Algorithm in Promotion of the Intrinsic Heart Activity.","status":"UNKNOWN","status_verified_date":"2005-09","start_date":"2004-04","start_date_type":null,"primary_completion_date":null,"primary_completion_date_type":null,"completion_date":"2006-04","completion_date_type":null,"phases":["PHASE4"],"tickers":["MDT"]}