Treatment of Atrial Fibrillation by the Ablation of Localized Sources: CONFIRM (Conventional Ablation for Atrial Fibrillation With or Without Focal Impulse and Rotor Modulation) Trial - Narayan, SM; Krummen, DE; Shivkumar, K; Clopton, P; Rappel, WJ; Miller, JM (J Am Coll Cardiol, 2012)