{"nct_id":"NCT03160625","title":"Evaluation of Rate Adaptive Pacing on Chronotropic Response in Preserved Ejection Fraction HF","status":"WITHDRAWN","status_verified_date":"2018-04","start_date":"2017-07-01","start_date_type":"ESTIMATED","primary_completion_date":"2018-04-30","primary_completion_date_type":"ESTIMATED","completion_date":"2018-05-31","completion_date_type":"ESTIMATED","phases":["NA"],"tickers":["MDT"]}