c917523a_y_Results___ClinicalTrials_gov__Description
[0] No Implant Attempt [Description] 
Subjects who did not undergo an implant attempt of a CRT-P or CRT-D device and were not randomized
Biventricular Versus Right Ventricular Pacing in Heart Failure Patients With Atrioventricular Block (BLOCK HF) - Study Results - ClinicalTrials.gov