GPT and atrial fibrillation: The median mapping sensitivity of the ≥ 10% AF graph outperforms other vg-based methods (≥ 10% AF: 92.805%; ≥ 1% AF: 92.797%), while the ≥ 1% AF graph gave fewer median strongly biased sites (≥ 10% AF: 40; ≥ 1% AF: 30) and lower overall REF-to-ALT ratio (≥ 10% AF: 1.0051; ≥ 1% AF: 1.0026).