Comment on

• Cardiac-resynchronization therapy with or without an implantable defibrillator in advanced chronic heart failure.

  Bristow MR, Saxon LA, Boehmer J, Krueger S, Kass DA, De Marco T, Carson P, DiCarlo L, DeMets D, White BG, DeVries DW, Feldman AM; Comparison of Medical Therapy, Pacing, and Defibrillation in Heart Failure (COMPANION) Investigators. Bristow MR, et al. N Engl J Med. 2004 May 20;350(21):2140-50. doi: 10.1056/NEJMoa032423. N Engl J Med. 2004. PMID: 15152059 Clinical Trial.
• Prophylactic defibrillator implantation in patients with nonischemic dilated cardiomyopathy.

  Kadish A, Dyer A, Daubert JP, Quigg R, Estes NA, Anderson KP, Calkins H, Hoch D, Goldberger J, Shalaby A, Sanders WE, Schaechter A, Levine JH; Defibrillators in Non-Ischemic Cardiomyopathy Treatment Evaluation (DEFINITE) Investigators. Kadish A, et al. N Engl J Med. 2004 May 20;350(21):2151-8. doi: 10.1056/NEJMoa033088. N Engl J Med. 2004. PMID: 15152060 Clinical Trial.