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Subgroup analysis of AF-free survival curves. (A) Age < 60 years, (B) Age ≥ 60 years, (C) BMI < 25 kg/m2, (D) BMI ≥ 25 kg/m2, (E) LA diameter < 50 mm, (F) LA diameter ≥ 50 mm, (G) Paroxysmal AF, (H) Persistent AF, body mass index; LA, left atrium; AF, atrial fibrillation.
