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Kaplan–Meier curves by number of antiarrhythmic drugs failed (no drugs: top curve; one drug: second curve; two drugs: third curve; and three or more drugs: bottom curve) after the initial ablation (A) and after the final ablation (B) for all patients with AF1 (paroxysmal atrial fibrillation) and AF2 (persistent atrial fibrillation) combined.
